To see the other types of publications on this topic, follow the link: Radiographic film.
Journal articles on the topic 'Radiographic film'
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the top 50 journal articles for your research on the topic 'Radiographic film.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.
1
Rini Hatma Rusli, Ira Sandi Tunny, Maritje S. J. Malisngorar, Akhmadi Akhmadi, and Yohannes Hursepunny. "Perbandingan Kualitas Citra Radiograf Kepala Menggunakan Grid dan Tanpa Grid pada Computed Radiografi." Jurnal Ilmu Kedokteran dan Kesehatan Indonesia 2, no. 2 (2022): 244–49. http://dx.doi.org/10.55606/jikki.v2i2.4176.
Full textAbstract:
One factor that plays an important role in the quality of radiodiagnostic examination results is radiographic contrast. When examining thick objects, radiographic contrast will decrease as a result of the large amount of scattered radiation originating from the object and reaching the film. To obtain optimal radiographic contrast on thick objects such as the head, it can be done in various ways, including using a grid. The grid is a tool that functions to absorb scattered radiation but can still transmit primary radiation. Examination of the head is done to get the head radiograph and to determine any abnormalities or diseases of the head. This examination was performed using the grid and without grid to compare the better results of radiographs. Radiographs results were obtained using processing film, Computed Radiography (CR). This research used descriptive study conducted at Hospital Tk. II Pelamonia Makassar on January 2020. Based on the results of the research which conducted for examination of the head using grid and without grid on CR cassette obtained that the result of radiograph examination of the head using a grid was better.
2
Rini Hatma Rusli, Ira Sandi Tunny, Maritje S. J. Malisngorar, Akhmadi Akhmadi, and Yohannes Hursepunny. "Perbandingan Kualitas Citra Radiograf Kepala Menggunakan Grid dan Tanpa Grid pada Computed Radiografi." Jurnal Sains dan Kesehatan 6, no. 1 (2022): 101–6. http://dx.doi.org/10.57214/jusika.v6i1.524.
Full textAbstract:
One factor that plays an important role in the quality of radiodiagnostic examination results is radiographic contrast. When examining thick objects, radiographic contrast will decrease as a result of the large amount of scattered radiation originating from the object and reaching the film. To obtain optimal radiographic contrast on thick objects such as the head, it can be done in various ways, including using a grid. The grid is a tool that functions to absorb scattered radiation but can still transmit primary radiation. Examination of the head is done to get the head radiograph and to determine any abnormalities or diseases of the head. This examination was performed using the grid and without grid to compare the better results of radiographs. Radiographs results were obtained using processing film, Computed Radiography (CR). This research used descriptive study conducted at Hospital Tk. II Pelamonia Makassar on January 2020. Based on the results of the research which conducted for examination of the head using grid and without grid on CR cassette obtained that the result of radiograph examination of the head using a grid was better.
3
Mattoon, J. S. "Digital radiography." Veterinary and Comparative Orthopaedics and Traumatology 19, no. 03 (2006): 123–32. http://dx.doi.org/10.1055/s-0038-1632988.
Full textAbstract:
SummaryDigital radiography has been used in human medical imaging since the 1980's with recent and rapid acceptance into the veterinary profession. Using advanced image capture and computer technology, radiographic images are viewed on a computer monitor. This is advantageous because radiographic images can be adjusted using dedicated computer software to maximize diagnostic image quality. Digital images can be accessed at computer workstations throughout the hospital, instantly retrieved from computer archives, and transmitted via the internet for consultation or case referral. Digital radiographic data can also be incorporated into a hospital information system, making record keeping an entirely paperless process. Digital image acquisition is faster when compared to conventional screen-film radiography, improving workflow and patient throughput. Digital radiography greatly reduces the need for “retake” radiographs because of wide latitude in exposure factors. Also eliminated are costs associated with radiographic film and x-ray film development. Computed radiography, charged coupled devices, and flat panel detectors are types of digital radiography systems currently available.
4
Utami, Lucky Restyanti Wahyu. "Edukasi Processing Film Radiografi Manual Pada Mahasiswa Baru Program Studi Radiologi." Jurnal Pengabdian Masyarakat Sains dan Teknologi 3, no. 4 (2024): 148–53. https://doi.org/10.58169/jpmsaintek.v3i4.655.
Full textAbstract:
Radiographic film processing is divided into conventional and digital. Conventional radiography film processing uses manual and automatic while digital radiography film processing uses computed radiography and digital radiography. Conventional radiographic film processing is carried out in a special room called a darkroom. As time goes by, Radiology Installations in various health services are starting to abandon conventional radiographic film processing and switch to digital. However, as a basic knowledge, radiology students must still know conventional radiographic film processing in order to know the development process of radiographic film processing. The aim of the education carried out for new students at the Widya Husada University Semarang Radiology Study Program is to increase knowledge of manual radiographic film processing and increase knowledge of the steps for using manual radiographic film processing. This educational activity is carried out using lecture and practical methods. Based on educational activities carried out for new students of the Radiology Study Program, the results showed that there was an increase in knowledge regarding manual radiographic film processing by 100% and there was an increase in knowledge regarding the steps for using manual radiography film processing by 97.8%.
5
Silva, Paula Verona Ragusa da, Renan Roberto da Costa, Mariliani Chicarelli da Silva, Lilian Cristina Vessoni Iwaki, and Wilton Mitsunari Takeshita. "Digital evaluation of the influence of interruption of the fixation process on radiographic contrast and base-plus-fog density in three commercial brands of radiographic films." Revista de Odontologia da UNESP 43, no. 1 (2014): 41–45. http://dx.doi.org/10.1590/s1807-25772014000100007.
Full textAbstract:
INTRODUCTION : With the interest in anticipating access to the result of intraoral radiography, the radiographic processing is frequently neglected, compromising image quality. OBJECTIVE : The aim of this study was to evaluate the influence of interrupting the fixation process on the radiographic contrast and base-plus-fog density (BPFD) in three brands of periapical films. MATERIAL AND METHOD : Ninety radiographs were taken of an aluminum stepwedge and a lead plate for each brand, and they were divided according to the time of initial immersion in the fixative in: control group (without interrupting the fixing), 5, 10, 20, 30 and 40 seconds. During processing, films had the fixing stage stopped and were exposed to a negatoscope for 1 minute, then the fixation time of 10 minutes was completed. The radiographs were digitized and exported to Image Tool 3.0.software. RESULT : Kodak(r) film showed no statistically significant differences between groups, while Agfa(r) film presented difference in BPFD compared with Group 5 seconds, and Dentix(r) film showed statistical difference in all groups in comparison with the control group. CONCLUSION : Under the conditions studied, Kodak(r) film is not influenced by disruption of fixation as regards BPFD and image contrast, enabling early access to the results of radiographs, whereas Agfa(r) film requires at least 10 seconds of initial fixation, and Dentix(r) film obtains better results when the process of fixation is not interrupted.
6
Adewumi Isaac Popoola and Ibukun Ayodeji Olumodeji. "Design and construction of a radiographic film dryer." World Journal of Advanced Research and Reviews 15, no. 2 (2022): 352–61. http://dx.doi.org/10.30574/wjarr.2022.15.2.0798.
Full textAbstract:
Radiographs are vital in hospital diagnostic processes. After a radiograph is processed from the developer, it must be dried before it can be interpreted by the radiologist. Two methods are basically available for radiograph drying – open sun drying and oven drying. Despite variability in weather conditions which can hamper effective radiograph drying, most diagnostic centers still rely on the open sun drying method due to the unavailability of radiograph dryer. This project presents the design and construction of a radiographic film dryer that is cost effective, user friendly and serviceable using local technology. The dryer is composed of a heater, a blower, an extractor and a drying cabin that is capable of containing 25 detachable film hangers (49.5 cm) placed into two rails (37 cm) at both sides. Good quality of dried radiographs were obtained when chamber heating/air evacuation were done at 5 minutes time interval. 25 radiographs of two major sizes; 18 cm × 24 cm (smallest) and 35 cm × 43 cm (largest) were dried approximately 5 and 10 minutes respectively at maximum temperature of 55 0C. The drying process was both temperature and time controlled as moisture content was removed from the processed films in real time for quick diagnostic processes.
7
Adewumi, Isaac Popoola, and Ayodeji Olumodeji Ibukun. "Design and construction of a radiographic film dryer." World Journal of Advanced Research and Reviews 15, no. 2 (2022): 352–61. https://doi.org/10.5281/zenodo.7756578.
Full textAbstract:
Radiographs are vital in hospital diagnostic processes. After a radiograph is processed from the developer, it must be dried before it can be interpreted by the radiologist. Two methods are basically available for radiograph drying – open sun drying and oven drying. Despite variability in weather conditions which can hamper effective radiograph drying, most diagnostic centers still rely on the open sun drying method due to the unavailability of radiograph dryer. This project presents the design and construction of a radiographic film dryer that is cost effective, user friendly and serviceable using local technology. The dryer is composed of a heater, a blower, an extractor and a drying cabin that is capable of containing 25 detachable film hangers (49.5 cm) placed into two rails (37 cm) at both sides. Good quality of dried radiographs were obtained when chamber heating/air evacuation were done at 5 minutes time interval. 25 radiographs of two major sizes; 18 cm × 24 cm (smallest) and 35 cm × 43 cm (largest) were dried approximately 5 and 10 minutes respectively at maximum temperature of 55 <sup>0</sup>C. The drying process was both temperature and time controlled as moisture content was removed from the processed films in real time for quick diagnostic processes.
8
Murphy, Micheal, Richard Hodgson, Peter L. Harris, Richard G. McWilliams, David E. Hartley, and Michael M. D. Lawrence-Brown. "Plain Radiographic Surveillance of Abdominal Aortic Stent-Grafts: The Liverpool/Perth Protocol." Journal of Endovascular Therapy 10, no. 5 (2003): 911–12. http://dx.doi.org/10.1177/152660280301000510.
Full textAbstract:
Purpose: To present a protocol for plain radiographic surveillance of abdominal aortic stent-grafts that addresses the main variables in need of standardization: (1) patient position, (2) radiographic centering point, and (3) focus-to-film distance. Technique: Our policy is to perform baseline anteroposterior and lateral films following endoluminal grafting and repeat the studies annually. These are the most important films to assess migration and component separation; supplementary right and left posterior oblique radiographs may help identify wireform fractures. It is best to perform radiography before computed tomography if both tests are scheduled for the same day, as excretion of intravenous contrast opacifies the renal collecting systems and interferes with radiographic analysis. Conclusions: Evaluation of the radiographs depends on the design of the stent-graft, so it is important to understand graft construction and the position of the radiopaque markers to best assess changes on follow-up films.
9
Rusydiana, Dina, and Dona Doni Setyawan. "Investigation of Extraoral Dental Radiography Examination Rejections at a Dental and Oral Hospital in Semarang, Indonesia." MASHIJO : Medical Science and Hospital Journal 2, no. 1 (2023): 1–5. http://dx.doi.org/10.26714/mashijo.v2i1.1.
Full textAbstract:
Background : Extraoral radiography techniques, such as panoramic radiography and cephalometric radiography, are used to obtain an overall view of the teeth, jaws, and surrounding tissues. However, there are instances where radiographic images are rejected or marked as inadequate based on the required quality standards. Reject analysis is a method of evaluation that involves analyzing rejected dental radiographic images. This research will identify the most common factors contributing to image rejection and provide recommendations for improving the quality of dental radiographic images Methode : The type of scientific study in this research is quantitative and descriptive. The research was conducted at the Radiodiagnostic Department of the Dental Hospital, Muhammadiyah University of Semarang. The total sample size taken was 301 extraoral radiographic films. The research data were obtained through a retrospective survey approach and observation method. The analysis was performed using Microsoft Excel 2021 application. Result : The primary factors contributing to film rejection are patient movement (50%), patient positioning (25%), and device settings (25%). Film rejection for extraoral radiographic examinations consisted of 2 films in Panoramic examinations, accounting for 50%, and 2 films in Cephalometric examinations, also accounting for 50% Conclusion : The film rejection ratio for extraoral dental radiography examinations conducted at the Radiodiagnostic Department of the Dental Hospital, Universitas Muhammadiyah Semarang, remained below the normal limit value of 1.29%.
10
Haus, A.G., and J.E. Cullinan. "Screen film processing systems for medical radiography: a historical review." Radiographics 9, no. 6 (1989): 1203–24. https://doi.org/10.1148/radiographics.9.6.2685941.
Full textAbstract:
Since Roentgen first experimented with radiation to produce a radiographic image, many milestones have been reached in the design and manufacture of intensifying screens, medical x-ray films, film processors and chemicals. As a result, high-quality medical radiographs are obtainable today at very low radiation dose. This progress is the result of major contributions and the collaborative efforts of many individuals in industries, universities, and medical institutions involved in basic research, development and manufacturing. This article highlights some of the major advances in the evolution of screen-film-processor chemical systems for medical radiography. Photographs, radiographs, and scientific data are included which illustrate some of the major achievements.
11
Pellegrini, Henrique Auriemo, Ana DS da Silveira, Cesar A. Lascala, Maria Aparecida Alves de Cerqueira Luz, and Claudio Costa. "The influence of film type and processing method on radiographic density for occlusal caries diagnosis." Clinical and Laboratorial Research in Dentistry 21, no. 4 (2015): 234. http://dx.doi.org/10.11606/issn.2357-8041.clrd.2015.123684.
Full textAbstract:
Objectives: This study aimed to investigate the influence of the radiographic processing method on the radiographic density of two types of film. Radiographs from non-cavitated occlusal caries lesions obtained in a previous study were used. Methods: We analyzed 28 films from 12 patients that were obtained with the same X-ray device. Seven Ektaspeed (Kodak Eastman Kodak Co, Rochester, NY, USA) and seven Ultraspeed (Kodak Eastman Kodak Co) films were manually processed, while seven Ektaspeed and seven Ultraspeed films were automatically processed. The angle of incidence of the X-ray beam and the distances between the apparatus, the tooth and the film were standardized. Therefore, the study comprised four groups: GE1: Ektaspeed manually processed; GE2: Ektaspeed automatically processed; GU1: Ultraspeed manually processed; and GU2: Ultraspeed automatically processed. The images were digitized (G40450 Scan Jet C/T, Hewlett-Packard) and analyzed using Digora for Windows 2.7 (Soredex Medical Systems) to obtain the average radiographic density, and the data were analyzed using the Student’s t test for paired data (Bioestat 5.3). Results: Only the Ektaspeed film showed statistically significant differences between radiographic densities with different processing methods (p = 0.0037). Conclusions: The Ektaspeed film automatic pocessed is better suited for the early diagnosis of caries lesions.
12
Karaçam, Songül Çavdar, Duygu Tunçman, Ghada ALMisned, Antoaneta Ene, and Huseyin Ozan Tekin. "Investigation of Radiochromic Film Use for Source Position Verification through a LINAC On-Board Imager (OBI)." Medicina 59, no. 3 (2023): 628. http://dx.doi.org/10.3390/medicina59030628.
Full textAbstract:
Background and Objectives: Quality assurance is an integral part of brachytherapy. Traditionally, radiographic films have been used for source position verification, however, in many clinics, computerized tomography simulators have replaced conventional simulators, and computerized radiography systems have replaced radiographic film processing units. With these advances, the problem of controlling source position verification without traditional radiographic films and conventional simulators has appeared. Materials and Methods: In this study, we investigated an alternative method for source position verification for brachytherapy applications. Source positions were evaluated using Gafchromic™ RTQA2 and EBT3 film and visually compared to exposed RTQA radiochromic film when using a Nucletron Oldelft Simulix HP conventional simulator and a Gammamed 12-i brachytherapy device for performance evaluation. Gafchromic film autoradiography was performed with a linear accelerator (LINAC) on-board imager (OBI). Radiochromic films are very suitable for evaluation by visual inspection with a LINAC OBI. Results: The results showed that this type of low-cost, easy-to-find material can be used for verification purposes under clinical conditions. Conclusions: It can be concluded that source-position quality assurance may be performed through a LINAC OBI device.
13
Paludo, Laura, Sophia Lopes de Souza, Marcus Vinícius Reis Só, Ricardo Abreu da Rosa, Fabiana Vieira Vier-Pelisser, and Marco Antônio Húngaro Duarte. "An in vivo radiographic evaluation of the accuracy of Apex and iPex electronic Apex locators." Brazilian Dental Journal 23, no. 1 (2012): 54–58. http://dx.doi.org/10.1590/s0103-64402012000100010.
Full textAbstract:
The aim of this study was to evaluate in vivo the clinical applicability of two electronic apex locators (EALs) - Apex (Septodont) and iPex (NSK) - in different groups of human teeth by using radiography. The working lengths (WLs) of 100 root canals were determined electronically. The EAL to be used first was chosen randomly and a K-file was inserted into the root canal until the EAL display indicated the location of the apical constriction (0 mm). The K-file was fixed to the tooth and a periapical radiograph was taken using a radiographic film holder. The K-file was removed and the WL was measured. The same procedure was repeated using the other EAL. Radiographs were examined with the aid of a light-box with lens of ×4 magnification by two blinded experienced endodontists. The distance between the file tip and the root apex was recorded as follows: (A) +1 to 0 mm, (B) -0.1 to 0.5 mm, (C) -0.6 to 1 mm, (D) -1.1 to 1.5 mm, and (E) -1.6 mm or greater. For statistical purposes, these scores were divided into 2 subgroups according to the radiographic apex: acceptable (B, C, and D) and non-acceptable (A and E). Statistically significant differences were not found between the results of Apex and iPex in terms of acceptable and non-acceptable measurements (p>0.05) or in terms of the distance recorded from file tip and the radiographic apex (p>0.05). Apex and iPex EALs provided reliable measurements for WL determination for endodontic therapy.
14
Clifton, T. L., D. A. Tyndall, and J. B. Ludlow. "Extraoral radiographic imaging of primary caries." Dentomaxillofacial Radiology 27, no. 4 (1998): 193–98. http://dx.doi.org/10.1038/sj/dmfr/4600346.
Full textAbstract:
OBJECTIVE To evaluate three extra-oral radiographic imaging modalities as alternatives to conventional intra-oral film for the detection of primary caries. METHODS Sixty-four extracted primary molar teeth with eighty-five carious lesions were radiographed using D-speed film (N = 8), panoramic imaging (N = 8), multidirectional tomography (N = 8), and linear tomography (N = 8). Eight trained observers were asked to identify the presence or absence of caries on each surface using a five point scale. Ground sections were viewed microscopically to determine truth. ROC curve areas (Az) were generated from observer responses and assessed with ANOVA. RESULTS Average of Az for the detection of combined results for proximal and occlusal lesions were 0.70 for D-speed, film, 0.58 for linear tomography, 0.64 for both multidirectional tomography, and panoramic film. Turkey's pairwise comparisons of Az revealed that D-speed film was significantly better than linear tomography (P = 0.0039). When data were divided into proximal and occlusal surfaces the variability due to modality remained significant (P = 0.0003 and P = 0.0024 respectively). Turkey's comparisons for proximal surfaces revealed that D-speed film was significantly better than linear tomography (P = 0.0007), multidirectional tomography (P = 0.0010) and panoramic radiography (P = 0.0100). For detection of occlusal lesions, multidirectional tomography was significantly better than linear tomography (P = 0.0075) and panoramic radiography (P = 0.0034), but not significantly different from D-speed film (P = 0.2337). CONCLUSIONS Multidirectional tomography and panoramic radiography performed as well as intra-oral D-speed film for the combined assessment of proximal and occlusal caries in the model used. when proximal surfaces were evaluated alone, D-speed film was significantly better. For occlusal caries there was no statistically significant difference between multidirectional tomography and D-speed film.
15
Asriningrum, Surdiyah, Ismayanti Sudrajat, and Mely Meliawati. "Technical Error Factors On Panoramic Radiographic Examination At The Radiology Installation Of Unjani Dental and Mouth Hospital." International Journal of Business, Economics, and Social Development 4, no. 4 (2023): 279–86. http://dx.doi.org/10.46336/ijbesd.v4i4.523.
Full textAbstract:
Panoramic is a three-dimensional curved zone where anatomical structures are well defined on panoramic radiography. Panoramic radiography includes a detailed anatomy of the jaw complex with some superimpositions and distortions that can be exacerbated by technical errors in image acquisition as well as many extra-jaw anatomical structures that are able to give clear description to interpretate. Therefore, in obtaining a panoramic radiograph it is necessary to obtain the desired structure with high quality and minimal distortion. Errors that often occur in producing good panoramic radiographs are technical errors or when positioning the patient and during the panoramic examination. The purpose of this study was to determine the main factors causing the errors so that technician can produce good quality radiographs, take into account patient placement at the time of examination, perform film processing, and handle general film procedures. The research method used was a quantitative method with a descriptive observational approach. The number of samples was 64 radiographs, which are adult patients over 18 years old with the use of exposure factors in the range of 60kV, 10mA and 16.4s. All radiographs were taken by qualified radiographers with more than 5 years of experience. The radiographs were viewed and observed without any modification on a computed radiography monitor screen. Radiographic results will be evaluated by experienced technician who have worked more than 5 years. Evaluation is obtained by analyzing the data descriptively in the form of assessment of the percentage of rejection of panoramic radiographs to make conclusions. Out of the 2418 panoramic radiographs viewed, 2354 (97%) radiographs had no errors while 64 (3%) radiographs showed one or more positioning error. The most common positioning error observed in the radiographs was failuer to position chin tipped high (56,02%). Whereas the least common error recorded were movement and apron shadow (1.15%).
16
Farber, Daniel C., James K. DeOrio, and Maxwell W. Steel. "Goniometric Versus Computerized Angle Measurement in Assessing Hallux Valgus." Foot & Ankle International 26, no. 3 (2005): 234–38. http://dx.doi.org/10.1177/107110070502600309.
Full textAbstract:
Background: Digital workstations with high-resolution monitors are replacing standard radiographs for image evaluation and interpretation. Radiographic angles in the foot have been evaluated for interobserver and intraobserver reliability with plain films, but use of digital workstations has not been validated. Because the 1-2 intermetatarsal (IM) and hallux valgus (HV) angles help determine the most appropriate bunion procedure, the reliability of these measurements is important. Methods: The HV and 1-2 IM angles were evaluated on preoperative radiographs of 25 patients who subsequently underwent bunion procedures. A standardized technique using a film marker and goniometer on plain film was compared with use of a mouse and computerized angle measurement software at a digital workstation. Three foot and ankle surgeons conducted these measurements at various intervals. Completion of three readings of each radiograph in each format by each observer totaled 1,800 measurements. Results: Computerized measurement gave better overall reliability. For the HV angle, inter-observer agreement (measurements within 2 degrees) improved from 66% with plain films to 81% with the digital workstation (p < 0.001). Intraobserver agreement increased from 72% to 80%. The 1-2 IM angle was similarly reliable with both methods for inter- and intraobserver agreement. Conclusions: This study validates the use of computer-assisted angle measurement on digital radiographs for assessment of HV and 1-2 IM angles. Computerized measurement may result in more reliable readings because it eliminates the error inherent with use of a goniometer and facilitates adjustment of radiographic lines on the computer to ensure correct alignment.
17
Amoah, Prince, Sandyson Owusu-Poku, and Gordon Asartenga Ajubala. "Investigation of Wall Thickness, Corrosion, and Deposits in Industrial Pipelines Using Radiographic Technique." International Journal of Corrosion 2023 (July 24, 2023): 1–9. http://dx.doi.org/10.1155/2023/4924399.
Full textAbstract:
In this study, radiographic techniques were used to inspect large-diameter pipes that are used for transporting fluids in some industries in Ghana. Radiographic approaches such as the double wall technique (DWT) and tangential radiographic technique (TRT) were used to evaluate the remaining wall thickness, deposits, and corrosion in the pipes. Two steel pipes with known varying wall thicknesses ranging from 4.00 mm to 13.00 mm with a diameter of 150.00 mm were examined to authenticate the accuracy and reliability of the tangential method that was used to measure the remaining wall thickness. The tangential configuration resulted in a higher material thickness, which therefore required more time of exposure compared to the DWT method. The exposure angle of the source to the tangential part of the specimen was approximately 87°. The film generated was compared with a normal pipe piece that was not machined to serve as a control. From the radiograph obtained, an average of 6 and 7 rounded indications depicting pitting corrosion were revealed on the radiograph of the internally and externally fabricated pipe, respectively. Radiographs after the TRT revealed that the recorded wall thickness obtained from the film is about twice the value of the calculated true wall thickness.
18
Ardelean, E., M. Ardelean, C. Galfi, A. Socalici, and A. Josan. "Radiographic film waste management and recovery." Journal of Physics: Conference Series 2540, no. 1 (2023): 012041. http://dx.doi.org/10.1088/1742-6596/2540/1/012041.
Full textAbstract:
Abstract Health facilities in Romania generate hundreds of thousands of tons of medical waste (hazardous and non-hazardous) annually. It is therefore necessary to apply a rigorous management of this waste, in compliance with applicable regulations, especially in the case of waste with a high potential for harmfulness. In the context of the global PANDEMIC of COVID 19, the amount of radiographic films generated has increased, using the classic variant when the moderns investigative devices was no longer available. The legislation requires hospitals and clinics to follow certain rules regarding the management of X-rays films. These are considered private information and must be managed according to the legislation, but silver and other chemicals in the film are toxic to the environment when are disposed uncontrolled. Recycling companies prefer to recover silver from effluents used to obtain classical radiography, recovery that is done by electrolysis and does not require large investments. The paper presents a relatively simple technology of recycling the radiographic films starting from laboratory studies, by leaching them in sodium hydroxide solution and the implications from the point of view of managing such activities.
19
Burivong, Wanaporn, Thanatorn Sricharoen, Apichart Thachang, Sunsiree Soodchuen, Panitpong Maroongroge, and Vichit Leelasithorn. "Early Radiologic Diagnosis of Pulmonary Infection in Febrile Neutropenic Patients: A Comparison of Serial Chest Radiography and Single CT Chest." Radiology Research and Practice 2021 (February 18, 2021): 1–7. http://dx.doi.org/10.1155/2021/8691363.
Full textAbstract:
Objective. The purpose of this study is to compare the early radiologic diagnosis of pulmonary infection between serial chest radiography (chest film) and single chest computed tomography (CT chest) in the first seven days of febrile neutropenia. Methods. This study included 78 patients with hematologic malignancies who developed 107 episodes of febrile neutropenia from January 2012 to October 2017 and had a chest film performed within the first seven days. Demographic and radiographic data were retrospectively reviewed. Three radiologists independently and blindly evaluated chest films and CT chests. The sensitivity, specificity, and correlation of chest film with absolute neutrophil count were carried out. Results. A total of 222 chest films were performed during this period and found thirty-nine episodes (36.4%) of radiographic active pulmonary infection. The diagnosis of clinical positive for pulmonary infection is 44.8% (48/107). Sensitivity, specificity, positive predictive value, and negative predictive value of serial chest film in the early radiologic diagnosis of pulmonary infection are 50%, 74%, 61%, and 64%, respectively. The false-positive rate was 14%, and the false-negative rate was 22%. For single CT chest examinations, twenty-six studies were assessed, and 42.3% was indicative of radiographic active pulmonary infection. Sensitivity, specificity, positive predictive value, and negative predictive value of CT chest in the early radiologic diagnosis of pulmonary infection are 91%, 40%, 53%, and 86%, respectively. The false-positive rate was 60%. The absolute neutrophil count was not useful for predicting radiographic active pulmonary infection. Conclusion. Serial chest film for early radiologic diagnosis of pulmonary infection within the first seven days of febrile neutropenia has lower sensitivity with higher specificity as compared to a single CT chest. Conversely, CT chest may not only have a higher sensitivity in determining early pulmonary infection but also has a higher rate of false-positives.
20
Wahyuddin, Wahyuddin, AR Rakhmansyah Iskandar, and Nurul Adilah Z. "Analisa Artefak Pada Hasil Radiograf Yang Timbul Akibat Pengolahan Computed Radiography." Lontara 2, no. 1 (2021): 31–34. http://dx.doi.org/10.53861/lontarariset.v2i1.186.
Full textAbstract:
Artefacts are structures or appearances that are not normally present on radiographs, errors in radiographic processing may be due to technical errors or film processing errors. This research was conducted using Descriptive methods, with the type of literature study that aims to examine the causes of artifacts that can occur as a result of improper handling of film processing errors.The results of the analysis concluded that the frequent occurrence of artifacts in the processing of Computed Radiography is caused by two factors, that is the use of imaging plates and grids lisolm. His advice should be in the processing using Computed Radigraphy the officer must be more careful and pay attention to the components in Computed Radiography.
21
Chakraborty, Sankha S., S. Bhuvaneshwari, Balaji Manohar, Lipsa Bhuyan, CH Anupriya, and Awneet Kaur. "Comparing the Diagnostic Accuracy of Direct Digital and Conventional Intraoral Peri-apical Radiographs in Identifying Interdental Bone Loss: An Observational Study." Journal of Pharmacy and Bioallied Sciences 16, Suppl 2 (2024): S1390—S1392. http://dx.doi.org/10.4103/jpbs.jpbs_622_23.
Full textAbstract:
ABSTRACT The evaluation of conventional two-dimensional radiography is crucial in making the diagnosis of periodontitis. Radio-visiography (RVG) is one of the digital imaging modalities that have received significant recognition as a replacement for film-based radiography due to its improved image quality, quick turnaround time, and minimal radiation dose. In order to compare the diagnostic efficacy of Direct Digital and Conventional Intraoral Peri-apical Radiographs in identifying Interdental Bone Loss, the present investigation was carried out. A cross-sectional observational study was conducted among 96 patients prospectively. Radiographs were exposed using a Gendex Oralix AC machine. Statistical data was analyzed using IBM SPSS statistical software using appropriate statistical tests. For both age categories, the radiographic method yielded a higher mean score than the periodontal probe method. The mean scores were noted to be higher following surgery. The radiographic approach recorded a greater mean score when gender groups were compared than the periodontal probe, which had a lower mean score. The mean scores after surgery were noted to be lower than the radiography approach and higher than the periodontal probe. The results demonstrate the radiographic technique’s significant advantage over clinical tests in determining furcation regions as well as its superior accuracy in spotting periodontal disintegration over clinical probing.
22
Masood, Farah, Christos Angelopoulos, and Alan Glaros. "A Comparison Between Two Types of Radiographic Film for Accuracy of Measurements of Approximal Osseous Defects." Journal of Contemporary Dental Practice 7, no. 3 (2006): 22–29. http://dx.doi.org/10.5005/jcdp-7-3-22.
Full textAbstract:
Abstract Aim The purpose of this study was to compare two types of conventional radiographic film: Ekta-speed plus and Insight (Eastman Kodak Co, Rochester NY, USA) for accuracy of measurements of approximal bone loss. Methods and Materials Four dried human mandibles with complete dentition were selected. Radiographic images were made with a standardized technique. Mesial and distal bone levels on the mandibular premolar and molar teeth were measured on the two types of radiographs (Ekta-speed plus and Insight) by nine observers. The data obtained by the observers were compared with the primary investigators’ corresponding measurements, which served as “the ground truth” for this study. Results The results of the analysis of variance (ANOVA) demonstrated a significant difference for the Ektaspeed plus film (p = .001), but the difference was not clinically significant. The level of intra-rater reliability was high for the observers (0.969 to 0.990). Conclusion Performance of Ekta-speed plus and Insight films was found to be similar. Citation Masood F, Angelopoulos C, Glaros A. A Comparison Between Two Types of Radiographic Film for Accuracy of Measurements of Approximal Osseous Defects. J Contemp Dent Pract 2006 July;(7)3:022-029.
23
Permatahati, Annisa, Ria Noerianingsih Firman, and Farina Pramanik. "Kualitas radiograf periapikal dengan teknik bisektrisThe quality of periapical radiograph with the bisecting technique." Padjadjaran Journal of Dental Researchers and Students 3, no. 2 (2019): 82. http://dx.doi.org/10.24198/pjdrs.v3i2.23040.
Full textAbstract:
Pendahuluan: Pemeriksaan radiografi dalam bidang kedokteran gigi sangat membantu klinisi dalam penegakkan diagnosis. Diketahui bahwa teknik radiografi yang paling sering digunakan di Rumah Sakit Gigi dan Mulut Universitas Padjadjaran (RSGM Unpad) adalah teknik intraoral periapikal bisektris. Kualitas radiograf dipengaruhi oleh proses pemeriksaan radiografi. Kualitas radiograf sangat berpengaruh terhadap penentuan penegakkan diagnosis, rencana perawatan, dan evaluasi pasca perawatan. Tujuan dari penelitian ini adalah untuk mengetahui kualitas radiograf periapikal dengan teknik bisektris di RSGM Unpad. Metode: Jenis penelitian ini adalah deskriptif. Populasi dalam penelitian ini adalah radiograf periapikal dengan teknik bisektris sepanjang tahun 2018. Sampel dalam penelitian ini adalah radiograf periapikal dengan teknik bisektris periode November sampai Desember 2018. Jumlah sampel yang digunakan yaitu sebanyak 90 radiograf. Hasil: Kriteria kualitas yang paling banyak terpenuhi adalah kriteria kontras dan distorsi bentuk dengan 97,78%, dan mayoritas radiograf bisektris, yaitu pada rating 1 dengan 85,56%. Simpulan: Kualitas radiograf periapikal dengan teknik bisektris di RSGM Unpad secara umum berada pada rating 1 berdasarkan National Radiological Protection Board (NRPB), yaitu sempurna yang berarti tidak ada kesalahan pada persiapan pasien, pemaparan sinar, pemosisian film, dan pengolahan film.Kata kunci: Kualitas radiograf, teknik periapikal bisektris, rating NRPB. ABSTRACTIntroduction: Radiographic examination in the field of dentistry is beneficial for clinicians in establishing the diagnosis. It is known that the radiographic technique most commonly used at the Universitas Padjadjaran Dental Hospital (RSGM Unpad) is bisecting intraoral periapical technique. The radiographic inspection process influences the quality of the radiograph. Quality of the radiograph profoundly affecting determination of diagnosis, treatment plan, and post-treatment evaluation. The purpose of this study was to determine the quality of periapical radiographs with the bisecting technique at Universitas Padjadjaran Dental Hospital. Methods: This research was descriptive. The population of this study was periapical radiographs with the bisecting technique throughout 2018. The sample of this study was periapical radiographs with bisecting technique from November to December 2018. The number of samples used was 90 radiographs. Results: The most fulfilled quality criteria were contrast criteria and shape distortion with 97.78%, and the majority of bisecting radiographs, namely at rating 1 with 85.56%. Conclusion: The quality of periapical radiographs with bisecting technique at Universitas Padjadjaran Dental Hospital in general is ranked 1 based on the National Radiological Protection Board (NRPB), which is categorised as perfect, which means that there are no errors in patient preparation, exposure to light, film positioning, and film processing.Keywords: Radiograph quality, post-treatment periapical technique, NRPB rating.
24
Spiker, Andrea M., Ryan M. Graf, Sean P. Duminie, Stephanie A. Kliethermes, and David C. Goodspeed. "DIFFERENCES IN RADIOGRAPHIC MEASUREMENTS ON STANDING VERSUS SUPINE PELVIC RADIOGRAPHS." Orthopaedic Journal of Sports Medicine 8, no. 4_suppl3 (2020): 2325967120S0016. http://dx.doi.org/10.1177/2325967120s00167.
Full textAbstract:
Background: Accurate pelvic radiographic measurements is of clear clinical importance, as these measurements can drive the indications for surgery, the surgical approach utilized, and/or the degree of correction during hip preservation surgery. Currently, there are a large number of measurements available and reported on the literature when referencing anterior-posterior (AP) pelvic radiographs. However, there is no standardization of whether these pelvic radiographs are obtained in the standing or supine position. Hypothesis/Purpose: Standing vs. Supine radiographs, obtained in the same patient, will result in different value for standard radiographic measurements used in making hip pathology diagnoses. Methods: All new patients who presented for evaluation of hip pain between September 2016 and July 2018 were retrospectively reviewed. Inclusion criteria included age 18-50, no prior hip surgery/injury, and both standing and supine AP pelvis radiographs dated within 2 years of each other. Measurements were obtained on 26 radiographs (52 hips), blinded to patient demographics and standing versus supine radiograph. Measurements included minimum joint space, lateral center edge angle (LCEA), acetabular depth, acetabular inclination, Tönnis Grade, crossover sign, posterior wall sign, ischial spine sign. Results: Standing films resulted in significantly lower LCEA and acetabular depth measurements, and higher acetabular inclination. Supine measurements for crossover sign were 5.69 times more likely to be positive than standing measurements. Similarly, supine measurements for ischial spine were 7.93 times more likely to be positive (see Table 1). Conclusion: Based on our study, supine films are almost 6 times more likely to give a positive crossover sign and almost 8 times more likely to give a positive ischial spine sign than a standing film in the same patient. Additionally, LCEA, acetabular depth will be lower and acetabular inclination will be higher on standing films. As such, our recommendation is to obtain standing AP pelvis radiographs to obtain the most accurate pelvic radiographic measurements in hip preservation patients. Tables: [Table: see text]
25
Nur Hidayati, Siti, and Ikhwanata. "PENGARUH LAMA WAKTU PEMAKAIAN (USIA) DAN BENTURAN FISIK PADA KASET COMPUTER RADIOGRAPHY (CR)TERHADAP CITRA RADIOGRAFI." JRI (Jurnal Radiografer Indonesia) 5, no. 2 (2022): 104–6. http://dx.doi.org/10.55451/jri.v5i2.134.
Full textAbstract:
Background: Computed Radiography (CR)is a radiographic image processing computer acquisition technology. In CR, the radiographic image results are stored in a special film cassette and expressed in the form of the gray level of the image pixels. The results of the radiographic image on the film cassette are then read by a scanner and then can be saved in the form of an image file, which can be a special digital film format called DICOM (Digital Imaging and Communication in Medicine). One of the disturbances that occur in the resulting CR image is artifact. The length of time used (age) of CR cassette can cause interference with the results of radiographic images. The longer the life of the CR cassette and the more frequent use of the CR cassette, the noise may appear in the radiographic image results. The condition of the CR cassette has a big effect on the formation od the image so that physical collision such as falling, regardless of grip or impact should be avoided when inserted into the CR reader.
 Methods: This type of research uses quantitative research with an experimental approach. The CR cassettes studied were 4 CR cassette with different sizes but the length of time used (age) was the same. All 4 CR cassette were exposes to the same exposure factor. The object used is the step wedge. The results of the radiographic images are evaluated subjectively by 5 respondents (radiographers) to draw conclusions.
 Results: The duration of use (age) of CR cassette is done properly and does not often occur, it will produce good radiographic image results and can be used to establish diagnoses. Physical impact on the CR cassette can results in artifact. Artifact contained in the results of CR images can interfere with diagnosis.
26
Heaven, T. J., A. R. Firestone, and F. F. Feagin. "Quantitative Radiographic Measurement of Dentinal Lesions." Journal of Dental Research 69, no. 1 (1990): 51–54. http://dx.doi.org/10.1177/00220345900690010801.
Full textAbstract:
The purpose of this investigation was the comparison of the precision and accuracy of two reference ramp techniques for the quantification of radiographic density changes in teeth. Radiographs (65 kVp, 10 ma, 1 s, and intra-oral ultraspeed film) of transverse sections from extracted permanent human molars were made before and after dentinal lesions were created. Each radiograph contained the image of a tooth section and the aluminum reference ramp. Method A used the image of the ramp on both the before- and after-lesion radiographs, and method B used the image of the ramp only on the before-lesion radiograph. Three groups of lesions (0.525-mm diameter, n = 11; 0.675-mm diameter, n = 9; and the 0.525-mm holes enlarged to 0.675 mm) were measured radiographically by each technique and by direct planimetry of the lesions. Radiographic method B produced results in close agreement with the planimetric measurements. Method B differentiated (p<0.05) between groups that had a mean planimetric size difference of 0.10 mm (equivalent to a change in density difference of 0.6%). These density change measurements are in absolute units of mm of aluminum that can be compared between lesions and between samples. This technique may prove useful for the quantification of changes in mineral density of caries lesions detectable in longitudinal radiographic records.
27
Galvan Romitti, Fabiola Mara, Tatiane Hahn Schneider, Deise Renata Bringmann, Rosa Maria Rahmi Garcia, and Thiago de Oliveira Gamba. "Knowledge level on imaging exams protocols in pediatric dentistry: a cross-sectional study with questionnaire." Conjecturas 22, no. 16 (2022): 822–35. http://dx.doi.org/10.53660/conj-2068-2s14.
Full textAbstract:
This study aimed to evaluate the knowledge level of Dentistry students, who have already taken the Dental Radiology and Maternal Child 1 courses at the University of Caxias do Sul in May 2020, on the appropriate prescriptions and protocols of different imaging exams in their daily clinical practice. Materials and Methods: A questionnaire was developed using the Google Forms online platform and divided into different sessions: a) personal information; b) prescription of CBCT; c) students' specific knowledge regarding CBCT images; d) prescription of dental radiography techniques; e) imaging diagnostics; f) exposure dose; g) care with the radiation protection of both the professional and the patient during processing time for conventional radiographs. Fifty-six participants received the form by email. Results: Regarding CBCT, 66.6% of the respondents have already used it, and 91.6% believe that it is essential to have easy access to this technology. Whereas 37.5% declared thorough knowledge of the main terminologies, 66.67% stated that they rarely prescribe CBCT. Regarding radiation protection, 97.92% of the respondents said they wear a lead apron to ensure patients' protection; however, 23% of the aprons do not include a thyroid gland shield. As for the sensitivity of radiographic films, 50% of the respondents use radiographic film F. Conclusion:Thus, we found that a lack of specific knowledge on CBCT examinations and on conventional radiographic films exists among dental surgeo.
28
Khakim, Moh Lukman, Rachmad Syarifuddin H, Hanto S, Wahyu Dwi K, and Fahniati Sofi T. "Effect of radiographic film quality on SMAW weld defect detection in SA 240 Gr 316L pressure vessels." Jurnal Polimesin 23, no. 2 (2025): 233. https://doi.org/10.30811/jpl.v23i2.6172.
Full textAbstract:
This study shows that radiographic film quality significantly affects the accuracy of SMAW weld defect detection in SA 240 Gr 316L pressure vessels. Radiographic evaluations using both the Panoramic and Internal Source Techniques revealed variations in film density, with the Internal Source Technique achieving slightly higher density values (2.78–3.15) than the Panoramic Technique (2.50–2.88). A sensitivity level of 1.66% was achieved, allowing for the identification of slag inclusions (42 mm and 10 mm) and porosity defects (8 mm). Defects exceeding ASME Section V acceptance criteria required re-welding and re-evaluation. Several factors influencing radiographic quality were identified, including radiation source activity, exposure duration, and film processing conditions. Optimizing these parameters is essential for ensuring reliable defect detection and maintaining pressure vessel integrity. Future research could focus on advanced image processing techniques or digital radiography.
29
Hatiwsh, Dr Abdulrhman, and Dr Abubaker Deeb. "Radiographic Assessment of Root Canal Filling for Undergraduate, Graduate Students, and Endodontic Specialist." Scholars Journal of Dental Sciences 9, no. 7 (2022): 118–54. http://dx.doi.org/10.36347/sjds.2022.v09i07.002.
Full textAbstract:
Introduction: The aim of this study was to assess the radiographic technical quality of root canal therapy performed by three different groups of undergraduate, graduate and endodontic specialists conducted in the Jordan University of Science and Technology (JUST) Dental Teaching Center. Method and Material: The sample comprised of 320 subjects aged 18- 60 years old attended for endodontic treatments. Patients who had endodontic treatments were divided into three treatment groups according to their treatment providers (undergraduate students, graduate students and endodontic specialists). Periapical radiographic assessment sheet was attached to the patient’s file. This part included criteria for radiographic assessment for the quality of root canal filling. The following information were recorded, tooth type, quality of radiograph, taperness, length, and density of root canal filling, level of obturation in comparison to cement-enamel junction(CEJ), presence of apical periodontitis, location and size of apical periodontitis, presence of root resorption, presence of break in lamina dura, presence of widening of PDL space, presence of condensing apical periodontitis, presence of internal resorption, presence of missed canals, Presence of ledged canals, Presence of fractured instruments, presence of furcal lesions, pulpal diagnosis and restoration after endodontic treatment. Teeth were treated using at least three, long cones paralleling technique, radiographs (preoperative, working-length and postoperative) of a high quality that showed the entire length of the root and the periapical area. Two investigators using a magnifying lens and an X-ray viewer examined the radiographs independently. The results were compared and a final consensus was agreed. In case of disagreement, a third investigator was asked to read the radiograph and a final agreement was reached. Measurement was recorded and was taken as a caliber for periapical radiographs film reading. ...........
30
Azhari, Azhari, Gianto Gianto, and Suprijanto Suprijanto. "Comparison of the quality of the result of digitising panoramic analogue films using transmission and reflection scanner mode with direct digital imaging standard." Padjadjaran Journal of Dentistry 31, no. 2 (2019): 99. http://dx.doi.org/10.24198/pjd.vol31no2.21155.
Full textAbstract:
Introduction: The use of panoramic x-ray radiographs with analogue film negatives is still widely used. Contrast differences in the radiograph are determined by the level of light transmitted from the viewer to the film negative and visual perception of the radiologist, which can cause differences and errors of interpretation. This study was aimed to compare the quality of scanners produced by the transmission and reflection modes objectively with direct digital imaging standard. Methods: This study used a descriptive comparative design with purposive sampling method. Radiographic analysis was conducted towards 30 analogue radiographs of Radiology laboratory of Universitas Padjadjaran Dental Hospital. Digitisation was performed using a scanner with setting modes (reflection and transmission, 8-bit intensity resolution and spatial resolution of 800 dpi). Digitising the negative radiographs of analogue films into digital radiographs will get a range of percentage pixels. Histogram of radiographs with a percentage of pixels in the grey level range 0 - 64 exceeds 50%, including "under-exposed", in the grey level range 192 - 255 exceeding 50%, including "over-exposed". The evaluation was carried out to observe the radiograph exposure homogeneity by dividing the radiograph into 4 parts. Each part was calculated as the mean pixel value; then the standard deviation was searched for the four mean values (STDMI - standard deviation mean intensity) determined the homogeneity. Results: Digitising type of radiograph reflection was included under-exposed because the percentage of pixels in the grey level range 0 - 64 was 86.94%. STDMI consecutive reflection = 8.03, transmission = 18.05, direct digital imaging = 20.86. Conclusion: Digitisation with scanner transmission mode is the best result objectively because it approaches the quality value of direct digital imaging standard.Keywords: Objective quality, homogeneity, reflection, transmission
31
Tachakra, S., R. Freij, S. Mullett, and A. Sivakumar. "Teleradiology or Teleconsultation for Emergency Nurse Practitioners?" Journal of Telemedicine and Telecare 2, no. 1_suppl (1996): 56–58. http://dx.doi.org/10.1177/1357633x9600201s19.
Full textAbstract:
Twenty radiographs showing subtle orthopaedic findings were transmitted to three emergency physicians. Fifty-seven of the 60 attempted diagnoses were correct. We found the primary radiographic film had to be well centred, exposed, true and penetrated for successful transmission. There is a considerable element of familiarization with the technology. The software should permit simultaneous annotation from the two sites and additional cameras are necessary to enable emergency nurse practitioners (ENPs) to show the injured part. The 20 radiographs took 120 min to interpret with teleradiology rather than 10 min of viewing conventional films. The extra time for teleradiology is due to readers asking for multiple areas of the radiographic image to be enlarged before making a decision. We feel that ENPs should not engage in teleradiology but rather telemedical consultation.
32
Størmer, J., S. R. Bolle, T. Sund, G. E. R. Weller, and J. N. Gitlin. "ROC-study of a teleradiology workstation versus film readings." Acta Radiologica 38, no. 1 (1997): 176–80. http://dx.doi.org/10.1080/02841859709171264.
Full textAbstract:
Purpose: We have used receiver operating characteristic (ROC) analysis to compare screen assessment of digitized radiographic films transmitted by a teleradiology system, with evaluation of the original radiographs on film. Material and Methods: The material contained 120 cases (about 50% with selected pathology) that were difficult to diagnose. Four radiologists each evaluated half of the cases on film, and half on computer screen. The screen display was 1024×836 pixels with 8 bits/pixel. Results: We found the accuracy and sensitivity of the teleradiology system to be clearly inferior to film evaluation. Conclusion: Improvement is needed both in the teleradiology system, and in the training of radiologists to work on the electronic workstation.
33
Antonijevic, Djordje, Dragan Ilic, Vesna Medic, Slobodan Dodic, Kosovka Obradovic-Djuricic, and Zoran Rakocevic. "Evaluation of conventional and digital radiography capacities for distinguishing dental materials on radiograms depending on the present radiopacifying agent." Vojnosanitetski pregled 71, no. 11 (2014): 1006–12. http://dx.doi.org/10.2298/vsp1411006a.
Full textAbstract:
Bacgroun/Aim. The radiopacity of an endodontic material can considerably vary as measured on film and a digital sensor. Digital radiography offers numerous advantages over convential film-based radiography in dental clinical practice regarding both diagnostic capabilities and postintervention procedures. The aim of this study was to investigate the capacity of conventional and charge-conpled device (CCD) based digital radiography to detect material on radiograph depending on the radio-pacifying agent present in the material. Methods. Experimental cements were formulated by mixing Portland cement with the following radiopacifying agents: zinc oxide (ZnO), zirconium oxide (ZrO2), titanium dioxide (TiO2), barium sulphate (BaSO4), iodoform (CHI3), bismuth oxide (Bi2O3) and ytterbium trifluoride (YbF3). In addition, 5 endodontic materials comprising Endomethasone?, Diaket?, N2?, Roth 801? and Acroseal? were investigated to serve as control. Per three specimens of each material were radiographed alongside an aluminum step wedge on film (Eastman Kodak Company?, Rochester, NY) and a CCD-based digital sensor (Trophy Radiologie?, Cedex, France). Radiopacity values were calculated by converting the radiographic densities of the specimens expressed as a mean optical densities or mean grey scale values into equivalent thickness of aluminum. Results. Twoway ANOVA detected no significant differences with respect to the imaging system (p > 0.05), but the differences were significant with respect to radiopacifier (p < 0.001) and the interaction of the two factors (p < 0.05). Paired ttest revealed significant differences between the methods used for pure Portland cement, all concentrations of BaSO4 and CHI3, 10% and 20% additions of ZrO2 and Bi2O3 and 10% and 30% addition of YbF3 (p < 0.05). Conclusion. The materials which incorporate CHI3 or BaSO4 as radiopacifying agents are expected to be significantly more radiopaque on a digital sensor than on film. During clinical practice one should concern to the quality of contrast assessement obtained by digital according to conventional radiography.
34
Mikhailov, Igor I., Denis I. Galkin, Alexey V. Geit, and Andrey V. Vremenko. "Applying ROC analysis in defining requirements for digital radiography parameters." SCIENCE & TECHNOLOGIES OIL AND OIL PRODUCTS PIPELINE TRANSPORTATION 10, no. 1 (2020): 32–41. http://dx.doi.org/10.28999/2541-9595-2020-10-1-32-41.
Full textAbstract:
The replacement of film technology with digital in radiographic monitoring during the construction and repair of pipelines is a pressing issue. The new technology is based on the use of phosphorous plates (computed radiography) and digital array detectors (digital radiography). However, there is the problem of defining requirements for digital radiograms. Selection of image quality class in digital radiographic testing is carried out in coordination with the customer, even though the requirements for the quality of film-based images are set out in regulations. The authors have carried out a study and provided a method making it possible to minimize the influence of the human factor in assessing the descriptiveness of radiographic images and to impartially determine the requirements for a digital radiogram when the use of computed and digital radiography may be recommended as a replacement for film technology. In order to solve this problem there has been a proposal to use ROC analysis, making it possible to estimate binary classification, including decryption of radiograms based on the «defect – no defect» principle. A test sample containing areas with defects (defect simulators) and areas with no such defects, which made it possible to use a binary classification for the analysis of its radiograms, has been developed and manufactured. A minimum sample size of independent experts sufficient to exclude the influence of the human factor on decoding test sample images has been identified. A film radiogram corresponding to regulatory requirements has been made in order to compare film-based and digital technologies. Following the analysis of this image, a base ROC curve has been plotted. This formed the basis for comparing ROC curves plotted following the results of decoding digital images with different quality parameters. It made it possible to establish values for quality parameters when the descriptiveness of digital radiograms was higher than of film-based images, and to draw conclusions about the circumstances in which it is possible to replace film-based technology with digital and computed radiography.
35
Sutejo, Agus Probo, Haerul Ahmadi, and Tasih Mulyono. "IDENTIFICATION OF INCOMPLETE PENETRATION WELDING DEFECTS ON DIGITAL RADIOGRAPHIC FILM FIGURES WITH THE GEOMETRIC INVARIANT MOMENT." Jurnal Forum Nuklir 15, no. 2 (2021): 77. http://dx.doi.org/10.17146/jfn.2021.15.2.6283.
Full textAbstract:
The examination of defects in radiographic films necessitates specialized knowledge, as indicated by an expert radiographer (AR) degree, yet the subjectivity of AR in identifying defects is problematic. To overcome this subjectivity, an automatic welding defect identification is needed. This is executed by using Matlab to create artificial neural networks, which is beneficial for users with the graphical user interface (GUI) feature. One of the breakthroughs in the figure extraction into seven feature vector values is the geometric invariant moment theory. This prevents translation, rotation, and scaling from changing the figure's characteristics. Therefore, a welding defect identification system with a geometric invariant moment was created in the digital radiographic film figure to overcome the reading error by AR. The identification system obtained an accuracy rating of 89.9%.
36
Muhtadan, Risanuri Hidayat, Widyawan, and Fahmi Amhar. "Weld Defect Classification in Radiographic Film Using Statistical Texture and Support Vector Machine." Advanced Materials Research 896 (February 2014): 695–700. http://dx.doi.org/10.4028/www.scientific.net/amr.896.695.
Full textAbstract:
Weld defect identification requires radiographic operator experience, so the interpretation of weld defect type could potentially bring subjectivity and human error factor. This paper proposes Statistical Texture and Support Vector Machine method for weld defect type classification in radiographic film. Digital image processing technique applied in this paper implements noise reduction using median filter, contrast stretching, and image sharpening using Laplacian filter. Statistical method feature extraction based on image histogram was proposed for describing weld defects texture characteristic of a radiographic film digital image. Multiclass Support Vector Machine (SVM) algorithm was used to perform classification of weld defects type. The result of classification testing shows that the proposed method can classify 83.3% correctly from 60 testing data of weld defects radiographic films.
37
Peker, Ilkay, Meryem Toraman Alkurt, Oya Bala, and Bulent Altunkaynak. "The Efficiency of Operating Microscope Compared with Unaided Visual Examination, Conventional and Digital Intraoral Radiography for Proximal Caries Detection." International Journal of Dentistry 2009 (2009): 1–6. http://dx.doi.org/10.1155/2009/986873.
Full textAbstract:
Objective. The purpose of this study was to evaluate the efficiency of operating microscope compared with unaided visual examination, conventional and digital intraoral radiography for proximal caries detection.Materialsand Methods. The study was based on 48 extracted human posterior permanent teeth. The teeth were examined with unaided visual examination, operating microscope, conventional bitewing and digital intraoral radiographs. Then, true caries depth was determined by histological examination. The extent of the carious lesions was assessed by three examiners independently. One way variance of analysis (ANOVA) and Scheffe test were performed for comparison of observers, and the diagnostic accuracies of all systems were assessed from the area under the ROC curve ().Results. Statistically significant difference was found between observers (). There was a statistically significant difference between operating microscope-film radiography, operating microscope-RVG, unaided visual examination-film radiography, and unaided visual examination-RVG according to pairwise comparison ().Conclusion. The efficiency of operating microscope was found statistically equal with unaided visual examination and lower than radiographic systems for proximal caries detection.
38
De Smet, E., R. Jacobs, F. Gijbels, and I. Naert. "The accuracy and reliability of radiographic methods for the assessment of marginal bone level around oral implants." Dentomaxillofacial Radiology 31, no. 3 (2002): 176–81. http://dx.doi.org/10.1038/sj/dmfr/4600694.
Full textAbstract:
OBJECTIVES To determine the accuracy and reliability of radiographic methods for assessment of the marginal bone level around oral implants in human cadavers. METHODS In three human cadavers two implants were placed according to the Instruction Manual for the Brånemark System. One implant was installed in the canine and one in the premolar region of the left mandible. For each implant, conventional and digital intra-oral paralleling radiography were performed. Digital images were printed with a Kodak 1200 Distributed Medical Imaging printer on blue transparent film, glossy and plain paper. Furthermore, digital scanographic, panoramic and tomographic images were taken with the Cranex Tome multimodal X-ray unit and printed on Agfa Drystar TM 1 B transparent films. All images were evaluated by five dental specialists. Data were statistically compared with real measurements of the marginal bone level on the human cadavers, performed by the same group of observers. Intra- and inter-observer variability were determined. RESULTS Digital intra-oral images on glossy paper showed the smallest absolute difference between real and measured bone level, followed by digital intra-oral images on film and on plain paper, conventional intra-oral images on analogue film, panoramic, scanographic and tomographic images on film. The difference between real and radiographic measurements was not statistically significant (P&gt;0.05) for all radiographic techniques. Intra- and inter-observer reproducibility was high for all techniques. CONCLUSIONS The selected imaging techniques showed an acceptable accuracy for peri-implant bone level measurements with an overall error of less than 0.5 mm. Intra-oral images showed the smallest absolute differences.
39
Salti, L., and E. J. Whaites. "Survey of dental radiographic services in private dental clinics in Damascus, Syria." Dentomaxillofacial Radiology 31, no. 2 (2002): 100–105. http://dx.doi.org/10.1038/sj/dmfr/4600676.
Full textAbstract:
OBJECTIVES To perform a radiographic survey of private dental clinics in Damascus, Syria using a postal questionnaire to produce recommendations for improving the quality of dental radiographic services and education in Syria. METHODS Three hundred private dental clinics in Damascus were surveyed using a postal questionnaire (in English and Arabic) containing 27 questions on demographic information, equipment, techniques, selection criteria, frequency of examinations, and undergraduate/ postgraduate education. RESULTS Two hundred and two (67%) dentists responded of which 95% graduated in Syria. The results showed a general lack of knowledge and understanding of dental radiography. Sixty four per cent did not know the kVp setting of their equipment, 73% used D-speed film, 57% did not use film holders and beam aiming devices, 25% did not use a viewing box. In addition, 45% of known equipment operated at 50 kVp or less and 16% was over 20 years old. No meaningful selection criteria existed with a wide variation in type and frequency of radiographs used for different clinical conditions. Syrian undergraduate training in dental radiology was minimal and there was no postgraduate education in the speciality. CONCLUSIONS Several areas of the radiographic service in Damascus fall short of current recommendations on good practice. Recommendations are made to improve the service, the quality of undergraduate education and to establish postgraduate education.
40
Dr., T. Vijay Sylvester, Denny Cheruvathoor Dimla, Taniya Thomas Dr., Prathima Sreenivasan Dr., Prabhath Ramakrishnan Dr., and Janisha Vengalath Dr. "In Vitro, Comparison of the Diagnostic Efficacy of Conventional and Digital Imaging in the Detection of Periapical Lesions." International Journal of Innovative Science and Research Technology 7, no. 11 (2022): 185–90. https://doi.org/10.5281/zenodo.7344707.
Full textAbstract:
For more than a century, conventional radiographs have been utilised to assess periapical disease and are still employed in many parts of the world. The application of digital radiography has made a tremendous and widespread impact on diagnostic practice nowadays. Aim of the study was to compare the diagnostic efficacy of conventional and digital imaging in the detection of simulated periapical lesions. Materials and methods: An in vitro comparative study of digital and conventional intraoral radiographs was conducted using human skull. A total of 5 defleshed cadaver skulls were used in the study in which periapical lesions were created mechanically. Both conventional and digital images were acquired, processed, viewed and assessed for the certainty of the presence or absence of the periapical lesions and the assessment of the scores were done. The results were evaluated using Lickert’s scale and finally the assigned scores were compared using Wilcoxon’s signed rank test. Results: The difference between conventional and Dexis digital radiographic methods was found to be statistically not significant, except in the case of mechanically induced periapical lesions created using 4 mm bur, where Digital system outperformed conventional radiography. Conclusions: Digital radiographic system is considered equivalent to conventional radiography and hence can be routinely used as an alternative to conventional film.
41
Alvarado, Kevin, Antoine Drouart, and Frédéric Ott. "Comparison of Resolution and Contrast Performances of Silver Film, Imaging Plate and Scintillator Images in Neutron Radiography." EPJ Web of Conferences 298 (2024): 02002. http://dx.doi.org/10.1051/epjconf/202429802002.
Full textAbstract:
In the last decades, neutron imaging facilities have implemented systems such as imaging plates and CCD or sCMOS cameras coupled to a scintillator screen [1]. However, for some applications, such as detection of micro cracks in large-size metallic or organic materials such as pyrotechnic equipment, these methods have disadvantages, mostly related to their small field of view when high resolutions are required. On the other hand, the use of silver radiographic films, although an old technology restricted to static 2D imaging, allows observing details with very good spatial resolution (<50 µm) and over very large areas (30x30cm²), which compensates for their low efficiency. Since there is currently no technology that fulfills these needs, radiographic films were used on the Orphée reactor at the CEA Saclay until its shutdown in 2019. The CEA aims at potentially continuing the previous historical radiography activities on a new French HiCANS source, the ICONE project. Within this context, we aim at comparing radiographic films and other technologies. Hence radiographies were taken with films at PSI/SINQ on the NEUTRA beam line (with thermal neutrons, which will probably will be used at the ICONE facility) in order to compare them with measurements on the same objects taken at the Orphée nuclear reactor (with cold neutrons). Images were obtained with different neutron energies, different L/D and different fluence levels. High-resolution digitalization of the film was performed for quantitative analysis. We compared these images to those obtained with imaging plates or CCD cameras. A study of the quality and the statistics of the images after digitalization was done in order to quantify the evolutions of the dynamic range and the spatial resolution. We also aim at evaluating the effect of thermal energies vs cold energies. With these results, it could be determined if the usage of films can complement modern neutron imaging methods to fulfil specific requirements.
42
Adhiwangsa, F. Z., T. Mulyono, R. N. Wijaya, and Ismail. "Programming for exposure chart modelling in conventional X-ray radiography." Journal of Physics: Conference Series 2684, no. 1 (2024): 012007. http://dx.doi.org/10.1088/1742-6596/2684/1/012007.
Full textAbstract:
Abstract In radiography, an exposure chart is needed to determine the correct exposure. The creation of exposure chart so far requires a lot of film. To reduce the use of film, a program was created that utilizes the principles of radiographic exposure in the form of the relationship between tube current, tube voltage, exposure time, and geometry principles. The program was validated through curve fitting and Mean Absolute Percentage Error (MAPE) by comparing the density of the specimen radiograph image with the exposure chart generated by the program. The generated exposure chart is the exposure chart for steel with voltages of 120 kV, 130 kV, 140 kV, 150 kV, and 160 kV. The resulting exposure chart has a coefficient of determination of 0.97 and has high accuracy.
43
Shah, Pankil, and Komal Zalavadia. "Recent Advances in Dental Imaging." Scholars Journal of Dental Sciences 8, no. 6 (2021): 184–88. http://dx.doi.org/10.36347/sjds.2021.v08i06.004.
Full textAbstract:
There have been considerable advances in the field of dentistry in the past few decades. Such advances have led to better imaging tools for more accurate diagnosis and comprehensive treatment planning. Conventional radiographs with 2-dimensional (2D) imaging methods such as periapical radiographs, lateral cephalograms, and panoramic cephalograms have been used since a long time. Earlier such radiographs were recorded with film-based radiographic technique. These radiographs have been shifted to digital radiography with the advances in technology, which has led to a substantial decrease in the time required for procedures for image processing, viewing, and storage. Recently, the 3-dimensional (3D) radiographs such as Computed Tomography (CT) and Cone-beam computed tomography (CBCT) have changed the landscape of dental imaging. This paper discusses in detail the current available methods of dental imaging.
44
Faraj, Adnan, Mark Andrews, and Weiguang Li. "Inter and intra-observer errors for postoperative total hip radiographic assessment using computer aided design." Acta Orthopaedica Belgica 87, no. 1 (2021): 65–71. http://dx.doi.org/10.52628/87.1.09.
Full textAbstract:
Plain radiographic assessment of primary total hip arthroplasty following surgery remains to be the commonest radiological assessment. The current paper, studies the accuracy and concordance between observers reviewing these radiographs. A prospective radiographic and medical note review of ten patients who underwent total hip replacement for primary osteoarthritis, with a mean age of 69 years. Early and 6 weeks postoperative x-rays were assessed for hip profile and version profile using computer aided design (CAD) by two observers on two different occasions. The observers were Orthopaedic surgeons who perform arthroplasty of the hip. The results were analyzed statistically. Dimensions, including Femoral offset, medial offset and ilioischial offset showed a high degree of inter- film and intra-film correlation, with inter-class correlation (ICC) over 0.8. Except of the intra-film correlation of ilioischial offset measured on the post- operative films (p=0.067) by the first rater, all the intra and inter film correlation were significantly over the benchmark of 0.6. In terms of stem alignment, cup inclination and cup version, the intra-film correlation by rater n°2 ranges from 0.574 to 0.975 and were significantly over the benchmark of 0.6, except in the case of cup inclination measured on the 6 th? week follow-up ; meanwhile the intra-film correlation by rater n°1 ranges from 0.581 to 0.819 and none were significantly over the benchmark of 0.6. The inter-rater reliability and inter-film correlation showed a dichotomy of results among different dimensions of the measurement. Dimensions of femo- ral offset, medial offset and ilioischial offset showed a substantial degree of reliability in terms of inter-rater reliability, inter-film correlation, and intra-rater/film reliability.
45
Price, C. "Sensitometric evaluation of a new F-speed dental radiographic film." Dentomaxillofacial Radiology 30, no. 1 (2001): 29–34. http://dx.doi.org/10.1038/sj/dmfr/4600569.
Full textAbstract:
OBJECTIVE To compare a new experimental Kodak (Eastman Kodak, Rochester, NY, USA) F-speed dental X-ray film with Ektaspeed Plus and Ultra-speed. METHODS The three types of film were exposed and processed under standardized conditions. Values of base plus fog, speed, and film contrast were derived. Resolution was compared by a line-pair plate. RESULTS Under these experimental conditions, the speed of the new film was just into the F-speed range, and a little over twice as fast as Ultra-speed. The Ektaspeed Plus emulsion was somewhat slower than previously recorded when it was first introduced, but around the centre of the E-speed range. Ektaspeed Plus and the new F-speed film had almost identical film contrasts, the F-speed film having slightly greater contrast in the higher density range. Ultra-speed contrast was marginally greater in the lower density range, but was overtaken by both of the other emulsions at higher densities. All three emulsions had low values of base plus fog. Both E- and F-speed films resolved 10 line-pairs per millimetre well, though both emulsions were inferior to Ultra-speed. CONCLUSIONS The new F-speed film, since marketed as Insight, provides a further saving in radiation exposure, with no evident deterioration in film contrast or resolution.
46
Parks, Edwin T., and Gail F. Williamson. "Digital Radiography: An Overview." Journal of Contemporary Dental Practice 3, no. 4 (2002): 23–39. http://dx.doi.org/10.5005/jcdp-3-4-23.
Full textAbstract:
Abstract Since the discovery of X-rays in 1895, film has been the primary medium for capturing, displaying, and storing radiographic images. It is a technology that dental practitioners are the most familiar and comfortable with in terms of technique and interpretation. Digital radiography is the latest advancement in dental imaging and is slowly being adopted by the dental profession. Digital imaging incorporates computer technology in the capture, display, enhancement, and storage of direct radiographic images. Digital imaging offers some distinct advantages over film, but like any emerging technology, it presents new and different challenges for the practitioner to overcome. This article presents an overview of digital imaging including basic terminology and comparisons with film-based imaging. The principles of direct and indirect digital imaging modalities, intraoral and extraoral applications, image processing, and diagnostic efficacy will be discussed. In addition, the article will provide a list of questions dentists should consider prior to purchasing digital imaging systems for their practice. Citation Parks ET, Williamson GF. Digital Radiography: An Overview. J Contemp Dent Pract 2002 November;(3)4:023-039.
47
TAMBURUS, José Roberto. "QUALITY OF RADIOGRAPHIC IMAGES: LABORATORY EVALUATION OF INTRAORAL FILMS, FILTERS, COLLIMATORS, AND RADIATION EXPOSURE." Revista de Odontologia da Universidade de São Paulo 11, no. 3 (1997): 161–67. http://dx.doi.org/10.1590/s0103-06631997000300003.
Full textAbstract:
In order to evaluate density, radiographic contrast and dose of radiation exposure, the author analyzed 80 radiographs containing 640 optical density data of the images of a penetrometer, exposed to the radiation beam with combinations between D and E periapical films, aluminum and copper/aluminum filters, and circular or rectangular collimators. The data obtained were analyzed by ANOVA and allowed the following conclusions: 1) aluminum filtration resulted in improved image contrast; 2) the use of group D film and an aluminum filter produced improved image contrast quality; 3) the rectangular collimator contributed to the production of improved contrast and to the reduction of radiation exposure, but did not affect density; 4) the combination of copper/aluminum filter, E group film and rectangular collimation significantly reduced radiation exposure.
48
Hintze, H., and A. Wenzel. "Influence of the validation method on diagnostic accuracy for caries. A comparison of six digital and two conventional radiographic systems." Dentomaxillofacial Radiology 31, no. 1 (2002): 44–49. http://dx.doi.org/10.1038/sj/dmfr/4600645.
Full textAbstract:
OBJECTIVE To evaluate the influence of the validation method on the diagnostic accuracy and the relative comparison of eight radiographic systems for caries detection. METHODS Three hundred and thirty-eight approximal and 145 occlusal surfaces were radiographed under standardised conditions using six CCD-based sensor systems: MPDx (Dental/Medical Diagnostic Systems Inc., Woodland Hills, CA, USA), Dixi (Planmeca, Helsinki, Finland), Sidexis (Sirona, Bensheim, Germany), RVG(old) (Trophy, Paris, France, 1994 model), RVG(new) (Trophy, Paris, France, 2000 model) and Visualix (Gendex, Milan, Italy) and two film systems: Ektaspeed Plus and Insight (Eastman Kodak, Rochester, NY, USA). Four observers examined the radiographs for approximal and occlusal caries using a five-point confidence scale. The presence of caries was validated histologically and radiographically. Diagnostic accuracy was evaluated using ROC curve areas (A(z)). RESULTS For both approximal and occlusal caries the mean A(z) of the eight radiographic systems was significantly higher using radiographic than histological validation (P&lt;0.001). Using histological validation for approximal caries, Dixi (A(z)=0.71) and Ektaspeed Plus (A(z)=0.7) were not significantly different, but Dixi was significantly more accurate than the other digital systems and the Insight film. Using radiographic validation for approximal caries, Ektaspeed Plus (A(z)=0.87) was significantly more accurate than Dixi (A(z)=0.82). Dixi was significantly more accurate than MPDx (A(z)=0.74), RVG(old) (A(z)=0.77), RVG(new) (A(z)=0.77) and Visualix (A(z)=0.76). Corresponding variations were found for occlusal caries depending on the validation method. Using histological validation, MPDx (A(z)=0.76) was significantly less accurate than Dixi (A(z)=0.81), Sidexis (A(z)=0.8), Ektaspeed Plus (A(z)=0.82) and Insight (A(z)=0.81). Using radiographic validation, MPDx (A(z)=0.83) was also significantly less accurate than RVG(old) (A(z)=0.89) and RVG(new) (A(z)=0.9). CONCLUSION A(z) obtained from radiographic validation was significantly higher than A(z) obtained from histological validation. Comparison of the diagnostic efficacy for caries of the eight radiographic systems was strongly influenced by the validation method. DOI: 10.1038/sj/dmfr/4600645
49
Kaur, Harneet, Harshita Gupta, Himanshu Dadlani, et al. "Delaying Intraoral Radiographs during the COVID-19 Pandemic: A Conundrum." BioMed Research International 2022 (January 12, 2022): 1–5. http://dx.doi.org/10.1155/2022/8432856.
Full textAbstract:
Background. The COVID-19 pandemic has made dentists very assiduous about cross-infection during dental treatment, thereby delaying dental radiographs for treatment. However, patients needing dental emergency treatment in the ongoing pandemic require relevant intra/extraoral dental radiography for adequate diagnosis and treatment planning. Methods. This article is aimed at adding to the hot debate: Is delay for intraoral radiographs justified or a possible proxy? As a narrative review, it provides an insight into the reasons for delaying intra-oral dental radiographs during in the pandemic and options of the nontraditional radiographic techniques available until the pandemic subsides. Discussion and Conclusion. Cross-contamination concerns through respiratory droplets grow while using intraoral film holders that stimulate gag reflex, coughing, saliva secretion, and if proper disinfection protocols are not applied. Since the patients’ acquiring emergency dental treatment cannot be neglected, the return-to-work guidelines by the health regulatory bodies urge to prioritize extraoral radiographic imaging techniques to curb the infection, offering the best diagnostic efficacy. The dental professionals can consider cone-beam computed tomography (CBCT) scans and sectional dental panoramic radiographs (SDPRs), followed by a risk assessment for COVID-19, a safer modality in reducing cross-contamination and assuring an innocuous environment for both patient and coworkers.
50
Rocha, Anna Sílvia Penteado Setti da, Solange Maria de Almeida, Frab Norberto Bóscolo, and Francisco Haiter Neto. "Interexaminer agreement in caries radiographic diagnosis by conventional and digital radiographs." Journal of Applied Oral Science 13, no. 4 (2005): 329–33. http://dx.doi.org/10.1590/s1678-77572005000400003.
Full textAbstract:
The purpose of this research was to compare two digital storage phosphor systems and conventional film, as well as verify the interexaminer agreement in radiographic diagnosis on occlusal and proximal cavities. Two digital systems and conventional radiographic film were used to evaluate 144 tooth surfaces with and without cavities; the radiographs were analyzed and scored in a scale of 4 points. Thirteen undergraduates and an oral radiologist participated as examiners. A light microscopy analysis was accomplished in order to validate the research. The results showed that there was no significant difference between the radiographic systems, however all of them had significant differences when compared to light microscopy, except for the Digora system on the proximal surface when the radiologist was the examiner. In the interexaminer evaluation, a moderate agreement level was obtained, and a fair to moderate level was obtained between the students and the oral radiologist. Regarding the validation (sensitivity, specificity, positive predict and negative predict) the values were similar between students and the oral radiologist, except for the sensitivity value on the occlusal surface. The students had the highest number of false-positive results and the oral radiologist the highest number of false-negative results.