Relevant bibliographies by topics / Digital radiographic

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Academic literature on the topic 'Digital radiographic'

Author: Grafiati
Published: 4 June 2021
Last updated: 4 February 2022

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Journal articles on the topic "Digital radiographic"

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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.

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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.
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Basso, Maria D., Fabiano Jeremias, Rita C. L. Cordeiro, and Lourdes Santos-Pinto. "Digital Radiography for Determination of Primary Tooth Length:In VivoandEx VivoStudies." Scientific World Journal 2015 (2015): 1–5. http://dx.doi.org/10.1155/2015/939045.

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Background.Methods for determining the root canal length of the primary tooth should yield accurate and reproducible results.In vitrostudies show some limitations, which do not allow their findings to be directly transferred to a clinical situation.Aim.To compare the accuracy of radiographic tooth length obtained fromin vivodigital radiograph with that obtained fromex vivodigital radiograph.Method.Direct digital radiographs of 20 upper primary incisors were performed in teeth (2/3 radicular resorption) that were radiographed by an intraoral sensor, according to the long-cone technique. Teeth were extracted, measured, and mounted in a resin block, and then radiographic template was used to standardise the sensor-target distance (30 cm). The apparent tooth length (APTL) was obtained from the computer screen by means of an electronic ruler accompanying the digital radiography software (CDR 2.0), whereas the actual tooth length (ACTL) was obtained by means of a digital calliper following extraction. Data were compared to the ACTL by variance analysis and Pearson’s correlation test.Results.The values for APTL obtained fromin vivoradiography were slightly underestimated, whereas those values obtained fromex vivowere slightly overestimated. No significance was observed(P≤0.48)between APTL and ACTL.Conclusion.The length of primary teeth estimated byin vivoandex vivocomparisons using digital radiography was found to be similar to the actual tooth length.
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Gupta, Ishita, Astha Chaudhry, Solanki Savita, and Arvind Shetti. "Radiographic Assessment of Peri-implant Bone Level – A Comparative Study of Digital Intraoral and Digital Panoramic Radiography." Stomatoloski glasnik Srbije 62, no. 3 (2015): 117–21. http://dx.doi.org/10.1515/sdj-2015-0012.

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Abstract Introduction The objective of this study was to compare two radiographic methods - digital intraoral and digital panoramic radiography in assessing marginal bone level around dental implants. The study also evaluated inter-observer and intra-observer reliability during repeated assessments. Material and Methods Marginal bone around 29 implants in 17 patients was assessed using standardized digital intraoral and digital panoramic radiographs. Two observers evaluated bone level by noting the thread at which marginal bone seemed to be attached at distal and mesial surfaces of the implants. The assessments were repeated after one week. Kappa statistics was used to evaluate agreement between assessments, observers, and radiographical methods. Results The agreement rate between digital intraoral and digital panoramic radiography was fair. Intra-observer agreement was very good, while inter-observer agreement was moderate. Conclusion Digital panoramic radiographs can be used to evaluate marginal bone level in patients with multiple implants and also to supplement intraoral radiographs. However, observer variability should be considered when comparing values from follow up studies for implant maintenance.
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Khan, Ghulam Ishaq, Muhammad Talha Khan, Saroosh Ehsan, Anam Fayyaz, Haider Amin Malik, and Shafqat Hussain. "Accuracy of Working Length Measured by Apex Locator and Digital Radiography." Journal of the Pakistan Dental Association 30, no. 1 (2021): 24–28. http://dx.doi.org/10.25301/jpda.301.24.

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OBJECTIVE: The objective of this study was to compare the measurements of electronic and radiographic method of working lengths calculation with actual working length of root canals. Precise working length determination is the most important part for successful root canal procedure. The most commonly used methods to determine the working length in root canal treatment are radiography and electronic apex locator. METHODOLOGY: A cross sectional study was done over a period of 06 months in the Department of Operative Dentistry, Fatima Memorial Hospital, Lahore. Sixty patients who were recommended extraction of their premolar teeth with sixty canals were selected by convenience sampling. The Root ZX* apex locator was used to determine electronic working length exactly identifying the apical constriction. Reference points were identified and radiographic working length were determined 1mm short of radiographic apex. The teeth were extracted along with file cemented before extraction inside root canal. The actual length of the root canal was then calculated using the same files and reference point with 3.5X magnification. Pearson chi square test was applied to compare the apex locator and digital radiographic measurement with actual working length. RESULTS: The Root ZX® apex locator was 95% accurate to identify the apical constriction as compared 70% accuracy given by radiographs within 0.5 mm of the apex. CONCLUSION: Electronic apex locator was more accurate as compared to digital radiography in working length determination. KEYWORDS: Working length (WL), Electronic apex locators (EAL), Radiographic working length(RWL), Apical constriction (AC) HOW TO CITE: Khan GI, Khan MT, Ehsan S, Fayyaz A, Malik HA, Hussain S. Accuracy of working length measured by apex locator and digital radiography. J Pak Dent Assoc 2021;30(1):24-28.
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Mauthe, Peter W., and Kenneth A. Eaton. "An Investigation into Dental Digital Radiography in Dental Practices in West Kent following the Introduction of the 2006 NHS General Dental Services Contract." Primary Dental Care os18, no. 2 (2011): 73–82. http://dx.doi.org/10.1308/135576111795162893.

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Aims The primary aims of the study were to investigate the use of digital radiography within primary dental care practices in the West Kent Primary Care Trust (PCT) area and general dental practitioners’ (GDPs) self-reported change in radiographic prescribing patterns following the introduction of the nGDS contract in 2006. Methods Data were gathered via a piloted, self-completed questionnaire, and circulated to all GDPs listed on the National Health Service (NHS) Choices website as practising in the West Kent PCT area. There were three mailings and follow-up telephone calls. The resulting data were entered into a statistical software database and, where relevant, statistically tested, using the chi-square test and Pearson correlation coefficient. Results Of 223 GDPs, 168 (75%) responded. There were 163 usable questionnaires. The respondents represented 85% of the general dental practices in West Kent. Eighty (49%) respondents were using digital intra-oral radiography. Of those who used digital radiography, 44 (55%) reported that they used phosphor plate systems and 36 (45%) that they used direct digital sensors. Eighty-three (51%) had a panoramic machine in their practice, 46 of whom (55%) were using digital systems; of these, 32 (67%) were using a direct digital system. Seventy-one GDPs reported that they worked exclusively or mainly in private practice. Forty (56%) of these ‘mainly private’ GDPs reported that they used digital radiographic systems, whereas only 40 (44%) of the 89 ‘mainly NHS’ GDPs reported using digital radiographic systems. On average, mainly private GDPs made the transition to a digital radiographic system six months before mainly NHS GDPs. Of those who provided NHS dentistry before and after April 2006, only 18 (14%) reported taking fewer radiographs and seven (6%) taking more. Conclusions In February 2010, of the West Kent GDPs who responded to the questionnaire, just under 50% used digital radiography. Mainly private GDPs were more likely to use digital radiography than their mainly NHS counterparts. A link between digital radiography and increased prescription of radiographs was not specifically apparent from this study. There was no evidence that West Kent GDPs were taking fewer radiographs than they did prior to the introduction of the new GDS contract in April 2006. Research is needed to investigate whether the uptake of digital radiography by GDPs in the rest of the country is similar to that in West Kent.
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Mestriner, Soraya Fernandes, Dionísio Vinha, and Wilson Mestriner Junior. "Comparison of different methods for the occlusal dentine caries diagnosis." Journal of Applied Oral Science 13, no. 1 (2005): 28–34. http://dx.doi.org/10.1590/s1678-77572005000100007.

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The aim of this study was to compare the effectiveness of in-vitro methods for the occlusal dentine caries diagnosis. Thirty-eight sites were evaluated on third molars without macroscopic carious cavitation in adult individuals from the city of Barretos (SP), Brazil. Visual inspection (VI), endoscopic evaluation (AcuCam), visual inspection and blunt-tipped exploratory probes (Tactile), conventional bite-wing radiographs (CR), direct bite-wing digital radiograph (DR), and direct digital radiograph with contrast and brightness controled (DRbc) were used by five observers. In order to validate the data, the teeth were sectioned and histologically evaluated. The average sensitivity and specificity values of the methods were respectively:0,25 , 0,96 (VI); 0,15 , 0,92 (AcuCam); 0,17 , 0,95 (Tactile); 0,45 , 0,73 (CR); 0,33 , 0,80 (DR) and 0,35 , 0,84 (DRbc) , the effectiveness of clinical methods (VI, AcuCam and Tactile) as well as that of radiographic methods (CR, DR and DRbc) were comparatively similar. The clinical methods presented a smaller number of false-positive diagnosis than the radiographic methods. It was concluded that visual inspection is an important diagnostic method; conventional bite-wing and digital radiography aid the diagnosis and are equally efficient to diagnose carious lesions in the dentine of teeth without visible cavitation.
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Muchhal, Mohnish, Lav K. Niraj, Devanshu Chaudhary, Irfan Ali, Kuldeep Dhama, and Basavaraj Patthi. "Spanning the Horizon of Accuracy of Different Intraoral Radiographic Modalities: A Systematic Review." Journal of Contemporary Dental Practice 18, no. 12 (2017): 1206–12. http://dx.doi.org/10.5005/jp-journals-10024-2201.

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ABSTRACT Aim This study was conducted with an aim to systematically review the literature for assessing the accuracy of intraoral radiographs in detection of dental caries. Introduction Despite the advancements in oral disease science, dental caries continues to be a worldwide health concern, affecting humans of all ages. Correct diagnosis of caries is critical both in clinical practice as well as in epidemiology and radiography are worthwhile adjunct for a thorough examination. Results A literature review was performed in PubMed Central and Cochrane library, Embase, and Google Scholar, and these databases were searched up to 2016. The primary outcome measure was to assess the accuracy of intraoral radiographs in the detection of dental caries based on sensitivity and specificity. The sensitivity for conventional radiographs for the detection of lesions in enamel (16–68%) and dentin (16–96%) was found to be superior as compared with other modalities of digital radiography, whereas the specificity of digital radiography was found to be superior in detection of lesion in enamel (77–96%) and dentin (84–100%) when compared with conventional radiography. Sensitivity of conventional radiographs was noted to be superior as compared with digital radiography, whereas in terms of specificity, digital was found to be superior to conventional radiographs. Conclusion Although there was no significant difference between digital and conventional radiography in the diagnosis of caries, conventional radiographs were able to detect carious lesion, in general, but for lesion to be detected precisely, digital was found to be superior. Clinical significance As digital radiography produces lower ionizing radiation, dental professionals should employ this method in their routine dental practice for diagnosing and treating carious lesions. How to cite this article Muchhal M, Niraj LK, Chaudhary D. Ali I, Dhama K, Patthi B. Spanning the Horizon of Accuracy of Different Intraoral Radiographic Modalities: A Systematic Review. J Contemp Dent Pract 2017;18(12):1206-1212.
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Kumakawa, Kouzou. "Radiographic diagnosis of larynx by digital radiography." Nihon Kikan Shokudoka Gakkai Kaiho 37, no. 5 (1986): 400–407. http://dx.doi.org/10.2468/jbes.37.400.

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Beltrán, Jorge A., Roberto A. León-Manco, and Maria Eugenia Guerrero. "Comparison of the diagnostic accuracy of cone beam computed tomography and three intraoral radiographic systems in the diagnosis of carious lesions in vitro." Journal of Oral Research 9, no. 6 (2020): 466–73. http://dx.doi.org/10.17126/joralres.2020.091.

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Objective: The objective of the study was to compare the diagnostic accuracy of cone beam computed tomography and three intraoral radiographic systems in the detection of in vitro caries lesions. Material and Methods: One hundred teeth (46 molars and 54 premolars) were evaluated, including 176 proximal surfaces and 90 occlusal surfaces, with or without dental caries lesions. Digital images of all teeth were obtained using specific intraoral radiographs, VistaScan DürrDental®phosphor-plate radiography, XIOS XG Sirona® digital sensor radiography, and CBCT I-CATTM. Observers evaluated the images for the detection of caries lesions. The teeth were clinically sectioned and stereomicroscopy served as a validation tool. The relationship of sensitivity and specificity between all systems was determined through the ROC curve using Az values. Results: The values of the area under the curve (Az) selected for the CBCT I-CATTM system were 0.89 (0.84-0.93), for conventional radiography 0.71 (0.66-0.76), digital sensor radiography 0.74 (0.70-0.78) and digital radiography with phosphor-plates 0.73 (0.69-0.77). Statistically significant differences were found between the CBCT I-CATTM system and intraoral radiographic systems (p<0.01). The sensitivity and specificity values for the CBCT I-CATTM were 0.84 and 0.93 respectively. Conclusion: CBCT has a high sensitivity and specificity compared to intraoral radiographic systems for the diagnosis of dental caries lesions in vitro.
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Parks, Edwin T. "Digital Radiographic Imaging." Journal of the American Dental Association 139, no. 4 (2008): 477–81. http://dx.doi.org/10.14219/jada.archive.2008.0191.

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Dissertations / Theses on the topic "Digital radiographic"

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Davidson, Robert Andrew. "Radiographic contrast-enhancement masks in digital radiography." University of Sydney, 2006. http://hdl.handle.net/2123/1932.

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Doctor of Philosophy<br>Radiographic film/screen (F/S) images have a narrow latitude or dynamic range. The film’s ability to record and view all the anatomy within the x-ray field is limited by this narrow dynamic range. The advent of digital radiographic means of storing and displaying radiographic images has improved the ability to record and visualise all of the anatomy. The problem still exists in digital radiography (DR) when radiographic examinations of certain anatomical regions are undertaken. In this work, the value of anatomically shaped radiographic contrast-enhancement masks (RCMs) in improving image contrast and reducing the dynamic range of images in DR was examined. Radiographic contrast-enhancement masks are digital masks that alter the radiographic contrast in DR images. The shape of these masks can be altered by the user. Anatomically shaped RCMs have been modelled on tissue compensation filters (TCFs) commonly used in F/S radiographic examinations. The prime purpose of a TCF is to reduce the dynamic range of photons reaching the image receptor and hence improve radiographic contrast in the resultant image. RCMs affect the dynamic range of the image rather than the energy source of the image, that of the x-ray photons. The research consisted of three distinct phases. The first phase was to examine physical TCFs and their effects on F/S radiographic images. Physical TCFs are used in radiographic F/S examinations to attenuate the x-ray beam to compensate for varying patient tissue thicknesses and/or densities. The effect of the TCF is to reduce resultant radiographic optical density variations in the image, allowing the viewer to observe a range of densities within the image which would otherwise not be visualised. Physical TCFs are commonly aluminium- or lead-based materials that attenuate the x-ray beam. A TCF has varying physical thickness to differentially attenuate the iii beam and is shaped for specific anatomical situations. During this project, various commonly used physical TCFs were examined. Measurements of size and thickness were made. Characteristics of linear attenuation coefficients and half-value thicknesses were delineated for various TCF materials and at various energies. The second phase of the research was to model the physical TCFs in a digital environment and apply the RCMs to DR images. The digital RCMs were created with similar characteristics to mimic the shapes to the physical TCFs. The RCM characteristics can be adjusted by the viewer of the image to suit the anatomy being imaged. Anatomically shaped RCMs were designed to assist in overcoming a limitation when viewing digital radiographic images, that of the dynamic range of the image. Anatomically shaped RCMs differ from other means of controlling the dynamic range of a digital radiographic image. It has been shown that RCMs can reduce the range of optical densities within images with a large dynamic range, to facilitate visualisation of all anatomy within the image. Physical TCFs are used within a specific range of radiographic F/S examinations. Digital radiographic images from this range of examinations were collected from various clinical radiological centres. Anatomically shaped RCMs were applied to the images to improve radiographic contrast of the images. The third phase of the research was to ascertain the benefits of the use of RCMs. Various other methods are currently in use to reduce the dynamic range of digital radiographic images. It is generally accepted that these methods also introduce noise into the image and hence reduce image quality. Quantitative comparisons of noise within the image were undertaken. The anatomically shaped RCMs introduced less noise than current methods designed to reduce the dynamic range of digital radiographic images. It was shown that RCM methods do not affect image quality. Radiographers make subjective assessment of digital radiographic image quality as part of their professional practice. To assess the subjective quality of images enhanced with anatomically shaped RCMs, a survey of radiographers and other iv qualified people was undertaken to ascertain any improvement in RCM-modified images compared to the original images. Participants were provided with eight pairs of image to compare. Questions were asked in the survey as to which image had the better range of optical densities; in which image the anatomy was easiest to visualise; which image had the simplest contrast and density manipulation for optimal visualisation; and which image had the overall highest image quality. Responses from 123 participants were received and analysed. The statistical analysis showed a higher preference by radiographers for the digital radiographic images in which the RCMs had been applied. Comparisons were made between anatomical regions and between patient-related factors of size, age and whether pathology was present in the image or not. The conclusion was drawn that digital RCMs correctly applied to digital radiographic images decrease the dynamic range of the image, allowing the entire anatomy to be visualised in one image. Radiographic contrast in the image can be maximised whilst maintaining image quality. Using RCMs in some digital radiographic examinations, radiographers will be able to present optimised images to referring clinicians. It is envisaged that correctly applied RCMs in certain radiographic examinations will enhance radiographic image quality and possibly lead to improved diagnosis from these images.
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Irvine, Michael Alan, and thebovus@yahoo com. "Image Quality and Radiation Dose Comparison of a Computed Radiography System and an Amorphous Silicon Flat Panel System in Paediatric Radiography: A Phantom Study." RMIT University. Applied Sciences, 2009. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20091019.122013.

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This purpose of this work was to investigate the patient radiation doses and image quality of a Philips/Agfa computed radiographic (CR) system and a Philips indirect-capture digital radiographic (DR) system in a paediatric setting. A CDRAD digital radiographic contrast-detail phantom was used to assess radiographic image quality. Perspex slabs of three different thicknesses (6, 11 and 16 cm) were used to simulate paediatric patients of three arbitrary ages. These phantoms, in conjunction with the CDRAD digital radiographic contrast-detail phantom, were imaged under three different conditions. The CDRAD Analyser software package was used to assess the quality of each image. The first experiment conducted was a comparison of the two systems under standard conditions, with beam filtration of aluminium and copper, as recommended in European Guidelines on Quality Criteria for Diagnostic Radiographic Images in Paediatrics (European Commission 1996b). Image quality was compared for each phantom size at three doses with the same entrance exposure used for both systems. A visual comparison of the resulting contrast detail curves showed the DR system generally outperformed the CR system, especially at the lowest two doses. A chi-square analysis of the targets detected generally confirmed this visual impression. The second experiment performed was to compare the two systems under the conditions used in routine clinical practice at PMH. As a result of additional beam filtration not generally being employed, the image quality of the CR system was similar to the DR system for the two smaller phantom sizes but with a major dose cost - effective doses higher by between 38% and 100%. A chi-square analysis of the targets detected showed the CR system to be significantly better than the DR system at two of three doses for the thinnest phantom and no significant difference at any doses for the intermediate phantom size. For the largest phantom size, additional filtration - although different - was used for the CR and DR systems and so the X-ray beam spectra were more similar. Consequently, the results for this phantom size reflected those from the experiment conducted under standard conditions, ie the effective doses for both systems were similar and the image quality of the DR system superior. The chi-square analysis s howed the DR system to be significantly better than the CR at all three dose levels. A third experiment was undertaken to compare doses between the two systems at 'equal' image quality. The CDRAD Analyser software specific image quality parameter, IQFinv, was held constant for both systems. The entrance exposures required to achieve this image quality were measured and then converted to effective doses using the dose calculation software package PCXMC 1.5. The DR system offered effective dose savings of between 28 and 42% for the three phantom sizes. Overall, this work suggests that a Philips flat-panel system is superior to an Agfa CR system in paediatric radiography. This result generally reflects the findings of other authors who have conducted similar studies in adult patient settings.
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Pascoal, Ana Isabel Lourenco. "Optimisation of image quality and patient dose for chest radiography with digital radiographic systems." Thesis, King's College London (University of London), 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.438195.

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Bowen, Amber Jean. "Bone Density Measurement via Radiographic Calibration." DigitalCommons@CalPoly, 2010. https://digitalcommons.calpoly.edu/theses/341.

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Musculoskeletal injuries are the most common injuries sustained by athletes and military recruits and can result in decreased performance and lifelong disability. So common and costly are these injuries that the American Academy of Orthopedic Surgeons has provided guidelines for future research, including recommendations for the development of a large animal model of bone injury (USDA 2001). In human and veterinary medicine, digital radiography represents the primary diagnostic tool the physician uses to diagnose skeletal injury. Advances in digital radiography have provided the veterinarian with opportunities to make both simple and complex radiographic assessments. We investigated a simple quantitative measurement of the solar, concave aspect of the distal phalanx in the horse, termed the Palmar-Metric (PM). The PM was a significant predictor of solar cup volume (p < 0.001) and negatively correlated with age (r2 = 0.28, p < 0.05) as determined from 544 radiographs of the distal phalanx from the left and right front feet. Therefore, veterinarians should be aware of the age related change in the solar, concave aspect of the distal phalanx in the horse. We hypothesized that the decrease in the degree of concavity with age may be due to demineralization and subsequent loss of bone density along the solar margin of the distal phalanx. Therefore, we investigated the quantification of optical bone density (bone OD) via complex radiographic calibration. By developing a brightness/darkness index (BDI), the greyscale of radiographs, calibrated with an aluminum marker of varying known thickness, can be compared to the average density of a cross-section of bone. At varying radiographic exposure intensity (kV) and exposure time (mAs), Al BDI was a significant predictor of bone BDI (r2 = 0.960, p < 0.001) and bone OD (r2 = 0.971, p < 0.001). This method of calibration can be utilized by the radiologist to accurately assess bone OD regardless of technique, and allow direct comparison of radiographs taken under different exposure settings. This method successfully quantifies bone OD via measurement of BDI from standardized digital radiographs, allowing for the opacity of radiographs to be truly comparable when taken under different circumstances.
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Evanoff, Michael Geoffrey 1964. "Automatic identification of chest orientation in digital radiographic images." Diss., The University of Arizona, 1998. http://hdl.handle.net/10150/282811.

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Radiology departments are implementing conversion from the use of hard copy film in favor of digital imaging. New digital acquisitions are increasing the efficacy of radiological imaging. The outputs of new modalities such as magnetic resonance (MR) and computed tomography (CT) are digital. They both involve gathering information that allows reconstructing cross sectional projections of internal structures and displaying them as digital images. Other technologies, e.g., computed radiography (CR), can provide digital radiographic data that replaces analog projection radiography. To date, the processed digital data is still transferred to film to provide a typical radiographic film in appearance. The film is presented to the doctor for diagnostic review. The research in this dissertation is concerned with making a film-less department. It specifically addresses problems in presenting CR images to the physician. The goal of this research is to create a computer recognition algorithm that will automatically recognize the orientation and discriminate between the lateral and posteroanterior view of digital chest radiographs image. The algorithm maintains 91.9% accuracy rate. The recognition takes .15 second per image.
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Offiah, Amaka. "Optimisation of the digital radiographic imaging of suspected non-accidental injury." Thesis, University College London (University of London), 2005. http://discovery.ucl.ac.uk/1444875/.

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Aim: To optimise the digital (radiographic) imaging of children presenting with suspected non-accidental injury (NAI).;Objectives: (i) To evaluate existing radiographic quality criteria, and to develop a more suitable system if these are found to be inapplicable to skeletal surveys obtained in suspected NAI. (ii) To document differences in image quality between conventional film-screen and the recently installed Fuji5000R computed radiography (CR) system at Great Ormond Street Hospital for Children, (iii) To document the extent of variability in the standard of skeletal surveys obtained in the UK for suspected NAI. (iv) To determine those radiographic parameters which yield the highest diagnostic accuracy, while still maintaining acceptable radiation dose to the child, (v) To determine how varying degrees of edge-enhancement affect diagnostic accuracy. (vi) To establish the accuracy of soft compared to hard copy interpretation of images in suspected NAI.;Materials and Methods: (i) and (ii) Retrospective analysis of 286 paediatric lateral spine radiographs by two observers based on the Commission of European Communities (CEC) quality criteria, (iii) Review of the skeletal surveys of 50 consecutive infants referred from hospitals throughout the United Kingdom (UK) with suspected NAI. (iv) Phantom studies. Leeds TO. 10 and TO. 16 test objects were used to compare the relationship between film density, exposure parameters and visualisation of object details, (iv) Clinical study. Anteroposterior and lateral post mortem skull radiographs of six consecutive infants were obtained at various exposures. Six observers independently scored the images based on visualisation of five criteria, (v) and (vi) A study of diagnostic accuracy in which six observers independently interpreted 50 radiographs from printed copies (with varying degrees of edge-enhancement) and from a monitor.;Results: The CEC criteria are useful for optimisation of imaging parameters and allow the detection of differences in quality of film-screen and digital images. There is much variability in the quality and number of radiographs performed as part of skeletal surveys in the UK for suspected NAI. The Leeds test objects are either not sensitive enough (TO. 10) or perhaps over sensitive (TO. 16) for the purposes of this project. Furthermore, the minimum spatial resolution required for digital imaging in NAI has not been established. Therefore the objective interpretation of phantom studies is difficult. There is scope for reduction of radiation dose to children with no effect on image quality. Diagnostic accuracy (fracture detection) in suspected NAI is generally low, and is not affected by image display modality.;Conclusions: The CEC quality criteria are not applicable to the assessment of clinical image quality. A national protocol for skeletal surveys in NAI is required. Dedicated training, close supervision, collaboration and consistent exposure of radiologists to cases of NAI should improve diagnostic accuracy. The potential exists for dose reduction when performing skeletal surveys in children and infants with suspected NAI. Future studies should address this issue.
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Abdelkarim, Ahmad Ali. "Effect of JPEG2000 compression on landmark identification of lateral cephalometric digital radiographs a thesis /." San Antonio : UTHSC, 2008. http://learningobjects.library.uthscsa.edu/cdm4/item_viewer.php?CISOROOT=/theses&CISOPTR=57&CISOBOX=1&REC=16.

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Li, Gang. "Visual linearization of image data for the display of digital intraoral radiographs." Stockholm, 2004. http://diss.kib.ki.se/2003/91-85910-36-8.

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Moraes, Michelle Bianchi de. "Influência das variações de ângulos de projeção na detecção de reabsorções radiculares linguais e apicais simuladas: comparação entre subtração radiográfica digital e radiografia digital direta /." São José dos Campos: [s.n.], 2010. http://hdl.handle.net/11449/105861.

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Resumo: A reabsorção severa da raiz diagnosticada tardiamente pode acarretar a perda dentaria, e sendo a técnica de subtração radiográfica digital (SDR) um importante recurso para detecção precoce de alterações minerais, este estudo avaliou a eficiência no diagnóstico precoce da reabsorção radicular externa simulada apical e lingual, pela técnica de subtração radiográfica digital (SRD) e radiografia digital (RD). Foram utilizados 14 dentes incisivos de mandíbulas humanas maceradas com reabsorções de diferentes dimensões, simuladas na região apical e lingual, e radiografados com variação de ângulos de projeção. As radiografias foram subtraídas pelo programa Regeemy®, e para avaliação do desempenho dos métodos de diagnóstico, pares de radiografias periapicais e imagens subtraídas foram apresentadas a 2 radiologistas. De acordo com os resultados, não foram observadas diferenças estatisticamente significativas entre os métodos na detecção de reabsorções linguais, independentemente do tamanho da lesão, assim como não houve diferença entre os métodos na detecção de reabsorções apicais, com exceção do examinador 2 com relação a variação angular vertical e horizontal de 100 utilizando o maior nível de desgaste, que apresentou a radiografia digital como método superior na avaliação em relação a subtração radiográfica. E o aumento no nível de desgastes e a menor variação dos ângulos verticais e horizontais permitiram melhor avaliação nas regiões de reabsorções apicais e linguais, para detecção das reabsorções apicais e linguais. Com estes resultados podemos concluir que a subtração radiográfica digital é um exame indicado para detecção de pequenas perdas minerais em radiografias que apresentem pouca ou nenhuma variação nas angulações verticais e horizontais<br>Abstract: The severe root resorption diagnosed late can lead to tooth loss, and being the technique of digital subtraction radiography (SDR) as an important resource for early detection mineral changes, this study evaluated the efficiency in the early diagnosis simulated external root resorption apical and lingual by the technique of digital subtraction radiography (SRD) and digital radiography (DR). We used 14 human incisors jaw macerated with resorption different sizes, simulated in the apical and lingual, and radiographed with a range of projection angles. The radiographs were subtracted by the program Regeemy ®, and performance evaluation diagnostic methods, pairs intraoral radiographs and subtracted images were presented to two radiologists. According to the results, there were no statistically significant differences between methods in the detection lingual resorption, regardless of lesion size, as there was no difference between the methods in the detection of apical resorption, except the second examiner with respect to variation vertical and horizontal angle of 100 using the highest level of wear, which lodged the digital radiography as a method superior in the evaluation for subtraction radiography. And the increase in the level of wear and less variation vertical and horizontal angles allowed a better assessment resorption in the regions apical and lingual to detect and lingual apical resorption. With these results we conclude that the digital subtraction radiography is a test for the detection of small mineral loss in radiographs showing little or no variation in vertical and horizontal angles<br>Orientador: Mari Eli Leonelli de Moraes<br>Coorientador: Jefferson Luis Oshiro Tanaka<br>Banca: Rodrigo Dias Nascimento<br>Banca: Edmundo Médicci Filho<br>Banca: Milton Soares Gonçalves<br>Banca: Warley David Kerbauy<br>Doutor
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The, Bertram. "Digital radiographic preoperative planning and postoperative monitoring of total hip replacements techniques, validation and implementation /." [S.l. : [Groningen : s.n.] ; University Library Groningen] [Host], 2006. http://irs.ub.rug.nl/ppn/297657615.

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Books on the topic "Digital radiographic"

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Gunn, Christine. Digital and radiographic imaging: A practical approach. 4th ed. Churchill Livingstone, 2009.

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Barkhausen, Jörg. Digital breast tomosynthesis: Technique and cases. Thieme, 2016.

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Wood, Robert E. Forensic radiographic identification using manipulated digital dental images. s.n.], 1996.

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G, Gale Alastair, ed. Digital mammography: Proceedings of the 2nd International Workshop on Digital Mammography, York, England, 10-12 July 1994. Elsevier, 1994.

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L, Vealé Beth, ed. Digital radiography and PACS. Mosby/Elsevier, 2010.

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L, Vealé Beth, ed. Digital radiography and PACS. Mosby Elsevier, 2008.

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Radiography in the digital age: Physics, exposure, radiation biology. Charles C. Thomas, 2011.

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Radiography in the digital age: Physics, exposure, radiation biology. Charles C. Thomas, Publisher, LTD., 2014.

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author, Kahn S. Lowell, Bertozzi J. Christopher author, and Bunch Paul M. author, eds. Skeletal development of the hand and wrist: A radiographic atlas and digital bone age companion. Oxford University Press, 2011.

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Wind, Alida P. Guide to radiographic interpretation of the canine elbow joint: By means of digital imaging and colored line-drawings. The Institute for Genetic Disease Control in Animals, 1994.

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Book chapters on the topic "Digital radiographic"

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Dobson, Caroline J., and Clare S. Alison. "Radiographic Service Quality." In Digital Mammography. Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-04831-4_35.

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Forster, E. "Digital Radiographic Systems." In Equipment for Diagnostic Radiography. Springer Netherlands, 1985. http://dx.doi.org/10.1007/978-94-009-4930-0_20.

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Vogel, Robert A. "Digital radiographic assessment of coronary flow reserve." In Digital Cardiac Imaging. Springer Netherlands, 1985. http://dx.doi.org/10.1007/978-94-009-4996-6_8.

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Shaber, G. S., J. M. Boone, and R. Shlansky-Goldberg. "Detectability Evaluation of a Photostimulable Phosphor Digital Radiographic System." In CAR’89 Computer Assisted Radiology / Computergestützte Radiologie. Springer Berlin Heidelberg, 1989. http://dx.doi.org/10.1007/978-3-642-52311-3_23.

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Pätzold, M., and A. Teuner. "Restoration of Digital Radiographic Images by Using Two-Dimensional Antimetric Wave Digital Filters." In CAR’89 Computer Assisted Radiology / Computergestützte Radiologie. Springer Berlin Heidelberg, 1989. http://dx.doi.org/10.1007/978-3-642-52311-3_29.

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Musaev, Farkhad B., Viktor F. Pivovarov, and Nikolay N. Potrakhov. "The Digital Radiographic Analysis of Vegetable Seeds: An Innovative Method." In Complex Systems: Innovation and Sustainability in the Digital Age. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-58823-6_70.

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Halim, Suhaila Abd, Arsmah Ibrahim, and Yupiter HP Manurung. "Partial Differential Equation (PDE) Based Image Smoothing System for Digital Radiographic Image." In Communications in Computer and Information Science. Springer Singapore, 2015. http://dx.doi.org/10.1007/978-981-287-936-3_19.

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Lucchese, Mirko, and N. Alberto Borghese. "Denoising of Digital Radiographic Images with Automatic Regularization Based on Total Variation." In Image Analysis and Processing – ICIAP 2009. Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-04146-4_76.

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Mayo Nogueira, Patricia, F. Rodenas, B. Marín, J. M. Campayo, and G. Verdú. "Analysis of digital radiographic equipments with development of specific phantoms and software." In IFMBE Proceedings. Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-540-89208-3_100.

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Vogel, Robert A., Michael T. Lefree, and G. B. John Mancini. "Comparison of 35 mm Cine Film and Digital Radiographic Image Imaging for Quantitative Coronary Arteriography." In Developments in Cardiovascular Medicine. Springer Netherlands, 1988. http://dx.doi.org/10.1007/978-94-009-1331-8_15.

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Conference papers on the topic "Digital radiographic"

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May, Cecil G., Lawrence F. Gelder, and Boyd D. Howard. "The Use of Digital Radiography in the Evaluation of Radioactive Materials Packaging Performance Testing." In ASME 2007 Pressure Vessels and Piping Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/pvp2007-26590.

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New designs of radioactive material shipping packages are required to be evaluated in accordance with 10 CFR Part 71, Packaging and Transportation of Radioactive Material. This paper will discuss the use of digital radiography to evaluate the effects of the tests required by 10 CFR 71.71, Normal Conditions of Transport (NCT), and 10 CFR 71.73, Hypothetical Accident Conditions (HAC). One acceptable means of evaluating packaging performance is to subject packagings to the series of NCT and HAC tests. The evaluation includes a determination of the effect on the packaging by the conditions and tests. Historically, that determination has required that packagings be cut and sectioned to learn the actual effects on internal components, either after each test to document the effects of that test, or after all testing is complete which determines the cumulative effect on the package. Digital radiography permits the examination of internal packaging components without sectioning a package. This allows a single package to be subjected to the entire series of tests. After each test, the package is digitally radiographed and the effects of particular tests evaluated. Radiography reduces the number of packages required for testing and also reduces labor and materials required to section and evaluate numerous packages. This paper will include a description of the digital radiography equipment used in the testing and evaluation of the 9977 package at SRNL. The equipment is capable of making a single radiograph of a full-sized package in one exposure. Radiographs will be compared to sectioned packages that show actual conditions compared to radiographic images.
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Mori, Masako, Toshibumi Kashiwa, and Yoshimitsu Aoki. "Digital Image Evaluation Method for Digital Radiography." In 18th International Conference on Nuclear Engineering. ASMEDC, 2010. http://dx.doi.org/10.1115/icone18-29702.

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Digital radiography is getting one of the common radiographic testing techniques in various industries now. However, to apply this new technique to nuclear components radiographic testing, one big issue is how we can evaluate and ensure that the taken images have enough image qualities to be used as inspection record. In film radiography, the IQI, which stands for Image Quality Indicator, have been used to ensure that taken films have enough quality to detect any specified defects in the products. So in this paper, new alternative IQI that developed in our previous study for digital radiography to evaluate digital image quality are tested and evaluated. In addition, image evaluation criteria are also developed and evaluated by calculating MTF, which stands for Modulation Transfer Function, from the IQI images taken with the products. Finally, the recommended procedures to evaluate radiographic testing image are summarized.
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Poland, Richard W., David M. Immel, and Boyd D. Howard. "Digital Radiography vs Conventional Radiography: Is Digital Radiography in Compliance With the Code?" In ASME 2002 Pressure Vessels and Piping Conference. ASMEDC, 2002. http://dx.doi.org/10.1115/pvp2002-1627.

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Savannah River Technology Center filmless radiographic imaging system specialists have been “champions” of filmless radiographic imaging at the Savannah River Site since 1993. Recently a study was done comparing the differences between conventional film radiography and lens-coupled, charge-coupled-device digital radiography. Characteristics of both imaging methods that were considered in the study included resolution, latitude (called dynamic range by digital radiography imaging specialists), and modulation transfer functions. The results of those comparative experiments will be presented. A description of the lens-coupled, digital radiography imaging system will be provided.
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Mori, Masako, Toshibumi Kashiwa, and Yoshimitsu Aoki. "Digital Image Evaluation Method for Digital Radiography." In ASME 2010 Pressure Vessels and Piping Division/K-PVP Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/pvp2010-25264.

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Digital radiography is becoming one of the common radiographic testing techniques in various industries. However, to apply this new technique to nuclear components, one big issue is how to evaluate the images and ensure that the images have enough quality to be used as inspection record. In film radiography, the IQI, which stands for Image Quality Indicator, have been used to ensure that the films have enough quality to detect any specified defects in the products. In this paper, new alternative IQI that was developed in our previous study for digital radiography to evaluate digital image quality is tested and evaluated. In addition, new image evaluation criteria are also developed and evaluated by calculating MTF, which stands for Modulation Transfer Function, from the IQI images of the products. Finally, the recommended procedures to evaluate radiographic testing image are summarized.
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Mori, Masako, Toshibumi Kashiwa, and Yoshimitsu Aoki. "New IQI for Digital Radiography." In ASME 2007 Pressure Vessels and Piping Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/pvp2007-26188.

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Radiographic Test (RT) has been widely used in industries to detect inner defects of welded structures or any other significant components. Especially in the nuclear industry, film radiography is the dominant and standardized procedure in performing radiographic testing. Lately emphasis is on digital radiography. One of the most serious concerns for digitization is the lack of image resolution standardizing device like resolution gauge which would determine imaging parameters such as modular transfer function (MTF). This paper proposes line pair type image quality indicator (IQI) corresponding to the current IQIs for both hole and wire type. The advantage of this IQI is to enable easier calibration of testing conditions and quantification of digital RT image quality with required MTF that should be clearly defined in the examination procedures. Furthermore, to acquire “resolution-ensured” digital image of existing RT films, we developed line pair type standardization film. Prototypes of line pair type IQI and line pair type standardization film are currently in the validation study and trial implementing process. These results are also reported in this paper.
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Wang, Yen. "Comparison Of Digital Radiographic Units." In Application of Optical Instrumentation in Medicine XIV and Picture Archiving and Communication Systems (PACS IV) for Medical Applications, edited by Samuel J. Dwyer III and Roger H. Schneider. SPIE, 1986. http://dx.doi.org/10.1117/12.975386.

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Kutlubay, Evren M., Richard M. Wasserman, Bohyeon Hwang, et al. "Portable digital radiographic imager: an overview." In Medical Imaging 1996, edited by Richard L. Van Metter and Jacob Beutel. SPIE, 1996. http://dx.doi.org/10.1117/12.237839.

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Wong, Albert, H. K. Huang, Masaru Komori, et al. "A Dedicated Digital Projectional Radiographic System." In 1989 Medical Imaging, edited by Samuel J. Dwyer III, R. Gilbert Jost, and Roger H. Schneider. SPIE, 1989. http://dx.doi.org/10.1117/12.953212.

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King, Nicholas S. P., Frank H. Cverna, Kevin L. Albright, et al. "High-frame-rate digital radiographic videography." In SPIE's 1994 International Symposium on Optics, Imaging, and Instrumentation, edited by George A. Kyrala and Donald R. Snyder. SPIE, 1994. http://dx.doi.org/10.1117/12.189043.

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Mori, Masako, Tetsuo Taguchi, Mikio Takagi, and Yoshimitsu Aoki. "Digital Image Acquisition Method for Film Based Radiographic Testing." In ASME/JSME 2004 Pressure Vessels and Piping Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/pvp2004-2831.

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Radiographic Test (RT) has been widely used in various industries to detect inner defects of weld structures and other significant components. In terms of digitization, although the ASME Boiler and Pressure Vessel Code Section V provides general outlines of digital image acquisition and processing of RT film, it is not widely implemented in industries as medical radiography instruments. One major reason for not being able to drive RT film digitization is that they cannot quantitatively guarantee each RT film and its digital image resolution directly. To solve these bottlenecks, the present paper proposes two things: 1) Line pair type penetrameter corresponding to current image quality indicators (IQIs) for both hole and wire type, which enables us to not only easily guarantee radiographic testing film resolution but also quantify digitalized RT film image resolution [1]; and 2) Line pair type standard film which is used for digitizing “existing RT film” with commonly used imaging scanners. Prototypes of line pair type penetrameters have been developed and prepared for various materials and verified for its applicability to RT digitalization. Also, prototypes of standard film are manufactured and verified that used with scanners, we can get RT film images of which resolution are quantitatively guaranteed. These two new RT film digitizing methodologies enable us to get “resolution guaranteed film images” and “digital inspection.” Furthermore, this will contribute to “remote inspection” where manufacturers, inspectors, customers and government inspectors can share the results of inspection in electronic format and timely confirm them from a remote place.
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Reports on the topic "Digital radiographic"

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Nekoogar, F. Statement of Work Third Party Algorithm Development and Evaluation of Detection of Liquid Explosives in Dual-Energy Digital Radiographic/TIP Ready X-ray Images - Public Version. Office of Scientific and Technical Information (OSTI), 2009. http://dx.doi.org/10.2172/971793.

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Wheatcroft, Robert A. A Digital X-Radiography System. Defense Technical Information Center, 2000. http://dx.doi.org/10.21236/ada378879.

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CURTIS L. HARRIS - LATA. DIGITAL SPALL RADIOGRAPH ANALYSIS SYSTEM. Office of Scientific and Technical Information (OSTI), 1990. http://dx.doi.org/10.2172/760076.

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MCDANEL, JEFFREY. Best Practices Submittal for Digital Radiography. Office of Scientific and Technical Information (OSTI), 2005. http://dx.doi.org/10.2172/882681.

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Shepard, S. Jeff, Jihong Wang, Michael Flynn, et al. An Exposure Indicator for Digital Radiography. AAPM, 2009. http://dx.doi.org/10.37206/111.

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HOWARD, BOYD. DIGITAL RADIOGRAPHY OF SPECIAL NUCLEAR MATERIAL TEST PACKAGES. Office of Scientific and Technical Information (OSTI), 2006. http://dx.doi.org/10.2172/890212.

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Miller, Jr ,. A. C., Z. W. Bell, and D. A. Carpenter. Brighter Screens for Nondestructive Digital X-ray Radiography. Office of Scientific and Technical Information (OSTI), 2003. http://dx.doi.org/10.2172/1017410.

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Addiss, John, Adam Collins, and William G. Proud. Digital Speckle Radiography in the Penetration of Granular Materials. Defense Technical Information Center, 2009. http://dx.doi.org/10.21236/ada524395.

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Sain, J., W. Brown, P. Young, S. MacLaren, R. Seugling, and R. Vargas. Digital Radiography of NIF RadHohl 09A Ta2O5 Target 54. Office of Scientific and Technical Information (OSTI), 2009. http://dx.doi.org/10.2172/967288.

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Tim Roney, Bob Pink, Karen Wendt, Robert Seifert, and Mike Smith. Digital Radiography and Computed Tomography (DRCT) Product Improvement Plan (PIP). Office of Scientific and Technical Information (OSTI), 2010. http://dx.doi.org/10.2172/1000539.

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