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Academic literature on the topic 'Radiographic analysis'

Author: Grafiati

Published: 4 June 2021

Last updated: 12 February 2022

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Journal articles on the topic "Radiographic analysis"

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Sukanya, Arockia, Kamalanand Krishnamurthy, and Thayumanavan Balakrishnan. "Comparison of Preprocessing Techniques for Dental Image Analysis." Current Medical Imaging Formerly Current Medical Imaging Reviews 16, no. 7 (2020): 776–80. http://dx.doi.org/10.2174/1573405615666191115101536.

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Various dental disorders, such as lesions, masses, carries, etc. may affect the human dental structure. Dental radiography is a technique, which passes X-rays through dental structures and records the radiographic images. These radiographic images are used to analyze the disorders present in the human teeth. Preprocessing is a primary step to enhance the radiographic images for further segmentation and classification of images. In this work, the preprocessing techniques such as unsharp masking using high pass filter, bi-level histogram equalization and hybrid metaheuristic have been utilized for dental radiographs. The performance measures of the preprocessing techniques were analyzed. Results demonstrate that a hybrid metaheuristic algorithm for dental radiographs achieves higher performance measures when compared to other enhancement methods. An average Peak Signal-to-Noise Ratio (PSNR) value of 21.6 was observed in the case of a hybrid metaheuristic technique for dental image enhancement.

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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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Oliver, Richard G. "Cephalometric Analysis Comparing Five Different Methods." British Journal of Orthodontics 18, no. 4 (1991): 277–83. http://dx.doi.org/10.1179/bjo.18.4.277.

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A commonly used cephalometric analysis was performed repeatedly on five lateral cephalometric radiographs using a variety of methods, and the angular values obtained compared. Two computerized methods, one utilizing direct digitization of the radiograph and the other digitizing an enhanced video image of the radiograph, were compared with each other and also against the traditional manual method of tracing. In addition, a single manual tracing of each of the radiographs was digitized using each computer method. It was found that direct digitization is less precise than both the traditional method and digitization of a tracing. The facility to enhance the radiographic image using video techniques did not produce any significant improvement in precision of the cephalometric variables studied.

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Sriwahyuni, Sriwahyuni. "The PENGARUH TEGANGAN TABUNG (KV) TERHADAP KUALITAS CITRA RADIOGRAFI PESAWAT SINAR-X DIGITAL RADIOGRAPHY (DR) PADA PHANTOM ABDOMEN." SPEKTRA: Jurnal Fisika dan Aplikasinya 2, no. 2 (2017): 113. http://dx.doi.org/10.21009/spektra.022.04.

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The measurement of image quality ofÂ Digital Radiography (DR) with using the abdomen phantom. Image take with low kV to high kV for 10 times exposure. Image processing is done using the image application. The resulting radiograph image is analyzed by FFT analysis, Histogram and Gaussian Filter. In the FFT analysis the radiographic image tends to differ according to the tube voltage variation of 40 kV to 85 kV. In the radiographic image histogram analysis, including the imperfect image category because the distribution of pixel distribution is not yet complete in the gray scale area for all exposure variations. In the analysis using Gaussian filters the resulting radiographic image tends to be the same so that although using low kV and high kV the image will be the same. The use of Gaussian filters can help reduce the use of high kV on abdominal examination and reduce exposure to radiation dose. Keywords: Digital Radiography, Image Quality, Fourier Transform Filter, Gaussian Filter, Histogram.

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Rees, Chris A., Sudha Basnet, Angela Gentile, et al. "An analysis of clinical predictive values for radiographic pneumonia in children." BMJ Global Health 5, no. 8 (2020): e002708. http://dx.doi.org/10.1136/bmjgh-2020-002708.

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IntroductionHealthcare providers in resource-limited settings rely on the presence of tachypnoea and chest indrawing to establish a diagnosis of pneumonia in children. We aimed to determine the test characteristics of commonly assessed signs and symptoms for the radiographic diagnosis of pneumonia in children 0–59 months of age.MethodsWe conducted an analysis using patient-level pooled data from 41 shared datasets of paediatric pneumonia. We included hospital-based studies in which >80% of children had chest radiography performed. Primary endpoint pneumonia (presence of dense opacity occupying a portion or entire lobe of the lung or presence of pleural effusion on chest radiograph) was used as the reference criterion radiographic standard. We assessed the sensitivity, specificity, and likelihood ratios for clinical findings, and combinations of findings, for the diagnosis of primary endpoint pneumonia among children 0–59 months of age.ResultsTen studies met inclusion criteria comprising 15 029 children; 24.9% (n=3743) had radiographic pneumonia. The presence of age-based tachypnoea demonstrated a sensitivity of 0.92 and a specificity of 0.22 while lower chest indrawing revealed a sensitivity of 0.74 and specificity of 0.15 for the diagnosis of radiographic pneumonia. The sensitivity and specificity for oxygen saturation <90% was 0.40 and 0.67, respectively, and was 0.17 and 0.88 for oxygen saturation <85%. Specificity was improved when individual clinical factors such as tachypnoea, fever and hypoxaemia were combined, however, the sensitivity was lower.ConclusionsNo single sign or symptom was strongly associated with radiographic primary end point pneumonia in children. Performance characteristics were improved by combining individual signs and symptoms.

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Borchard, Justine, Wilshaw Stevens, Matthew Siebert, et al. "Quantitative Analysis of Talar Dome Morphology." Foot & Ankle Orthopaedics 5, no. 4 (2020): 2473011420S0014. http://dx.doi.org/10.1177/2473011420s00141.

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Category: Ankle; Other Introduction/Purpose: A flat-top talar dome deformity can alter ankle mechanics and impact daily activities. Radiographic determination of flatness is difficult using traditional measures. The purpose of this study is to describe a new method to quantify the talar dome morphology using lateral radiographs and a custom-written image processing algorithm. Methods: Skeletally mature patients previously treated for idiopathic clubfeet were identified from our institution’s clubfoot registry. All patients had weight-bearing lateral foot radiographs. Measurements included radius of curvature (ROC) of the talar dome and tibial plafond, talar length and height, and alpha angle. The ratio of the radii of the talar dome and tibial plafond (TD/TP Ratio) was determined. Custom-written, image processing MATLAB code was used to identify the talus from the lateral radiograph. Following manual identification of the articular surface, the average slope of the anterior, central, and posterior regions of the talar dome were calculated. Talar dome flatness was determined as the slope variance across all three regions. Higher variance indicated a rounder talar dome morphology, lower variance indicated a flatter dome. Inter-rater reliability of radiographic measures and the MATLAB based talar dome flatness were determined. Spearman’s rho was used to determine correlations between radiographic and MATLAB flatness measures. Results: For radiographic measures, the Inter-rater reliability (IRR) was determined for 52 feet. IRR was near perfect for the ROC of the talar dome (ICC=.985), talar length (ICC=.952), and alpha angle (ICC=.928). Measurement of the radius of the tibial plafond (ICC=.827) and talar height (ICC=.893) were reproduced with excellent reliability. The IRR of the TD/TP ratio was moderate (ICC=.608). Preliminary IRR for the MATLAB-based talar dome flatness (15 feet) was excellent (ICC=0.895). Flatness was strongly correlated with ROC of the talar dome (r=.621, p=.013), alpha angle (r=.557, p=.031) and TD/TP Ratio (r=-.589, p=.021). Conclusion: Flatness of the talar dome can be difficult to describe, as there lacks a single measure to accurately define its morphology. The method developed in this study was quick to apply (less than 5 to 10 minutes per foot) and had high inter-rater reliability.

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Farook, Fathima Fazrina, Bothinah Alnasyan, Duaa Almohammadi, et al. "Reliability Assessment of the Clinical and Radiographic Diagnosis of Furcation Involvement." Open Dentistry Journal 14, no. 1 (2020): 403–7. http://dx.doi.org/10.2174/1874210602014010403.

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Aim: The aim of the present study was to compare and assess the relationship and agreement between the clinical and radiographic detection of Furcation Involvement (FI) in the mandibular molars of patients with periodontitis. Materials and Methods: The sample size included 360 molars from 283 participants with a total of 180 molars involved with furcation clinically and 180 without. The inclusion criteria involved records of patients in the age range 35-76 years, diagnosed with generalized periodontitis, Stage II to IV, Grade B and C, and existing periapical radiographs/dental panoramic radiographs. The periodontal charts (Hamp’s classification) and radiographs were used to evaluate furcation on the buccal and lingual sites of first and second mandibular molars. Results: Of the 360 molars, half of the molars (50%, n=180) had clinical FI. Of the clinical FI group, the majority (73%, n=131) demonstrated FI in the radiological assessment with the periapical radiographs. In the not-clinically detected FI group, just less than half (49%, n=89) demonstrated FI in the radiological assessment. The sensitivity of the radiographic detection of FI as a diagnostic marker was 50.6%, and the specificity was 72.8%. Of the 180 sites analyzed with FI clinically, a slight agreement was found between the clinical assessment and radiographic findings using the kappa analysis (k=0.18). The first mandibular molars showed a fair agreement (k= 0.21) compared to the second mandibular molars (k=0.15). In terms of the individual sites, the lingual sites (k=0.24) had a fair agreement compared to the buccal sites with a slight agreement. The Spearman Correlation analysis for the first mandibular molar showed a moderate positive correlation (r=0.4, p<0.001) compared to the second mandibular molar with no or negligible relationship (r=0.19, p<0.001). Comparatively, the DPT radiograph showed a weak correlation and poor agreement. Conclusion: Both diagnostic tools, intraoral radiography and clinical assessment should be used for diagnosing FI in mandibular molars.

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Tarver, Robert D. "CHEST RADIOGRAPHIC ANALYSIS." Chest 98, no. 3 (1990): 20. http://dx.doi.org/10.1016/s0012-3692(16)32149-3.

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Newton-Hughes, Ann, and Julie Nightingale. "Radiographic Image Analysis." Radiography 17, no. 3 (2011): 265. http://dx.doi.org/10.1016/j.radi.2010.12.006.

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Matthews, John F. "Chest Radiographic Analysis." Radiology 175, no. 3 (1990): 720. http://dx.doi.org/10.1148/radiology.175.3.720.

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Dissertations / Theses on the topic "Radiographic analysis"

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Sundén, Pikner Solweig. "Radiographic follow-up analysis of Brånemark® dental implants /." Göteborg : Department of Oral and Maxillofacial Radiology, Institute of Odontology, University of Gothenburg, Folktandvården, Postgraduate Dental Education Center, 2008. http://hdl.handle.net/2077/10124.

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Hall, Nathan E. "A Radiographic Analysis of Variance in Lower Incisor Enamel Thickness." VCU Scholars Compass, 2005. http://scholarscompass.vcu.edu/etd/887.

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The purpose of this study was to help predict the enamel thickness of mandibular incisors. At least two direct digital periapical radiographs were made for each of the 80 subjects. Radiographs were scaled to control for magnification errors using dental study models and computer software. Mesiodistal incisor width and mesial and distal enamel thicknesses were measured. Lateral incisors were determined to be wider than central incisors and distal enamel thicknesses were larger than mesial enamel thicknesses on average. The African American group demonstrated wider incisors and enamel thicknesses than the Caucasian group on average. Enamel thickness positively correlated with tooth width for all incisors. No statistically significant differences were detected between male and female groups. Some conclusions relating to enamel thickness can be made based on race, incisor position, and incisor width, but correlations were not considered strong enough to accurately determine enamel width, without the aid of radiographs.

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Mistry, Sapan. "Radiographic analysis of femoroacetabular impingement with Hip²Norm : reliable and validated /." [S.l.] : [s.n.], 2008. http://opac.nebis.ch/cgi-bin/showAbstract.pl?sys=000279111.

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Batra, Preeti. "Analysis of Radiographic Changes Associated with the Periradicular Diagnosis of Symptomatic Apical Periodontitis." VCU Scholars Compass, 2016. http://scholarscompass.vcu.edu/etd/4141.

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Symptomatic apical periodontitis (SAP) is indicative of inflammation of the periodontal ligament. It may or may not be accompanied by radiographic changes and may occur with vital or necrotic pulpal diagnosis. Purpose of this study was to analyze clinical and radiographic presentations of SAP in a retrospective electronic dental chart and digital radiograph review utilizing the endodontic diagnostic template note of predoctoral dental school patients presenting with SAP. The aim was to determine prevalence of periapical radiolucencies (PARLs) in SAP, association of SAP to pulpal diagnosis, and define associated radiographic changes. Most prevalent pulpal diagnosis with SAP was symptomatic irreversible pulpitis (44%). A tooth presenting with SAP was more likely to have an intact lamina dura, but presented with a PARL 38% of the time. When a PARL was present the most common pulpal diagnosis was pulp necrosis however, 24.5% of teeth presented with a vital pulp diagnosis and lesions <2mm.

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Taranto, Julie. "Analysis of dynamic angle of gait and radiographic features in subjects with hallux valgus." University of Western Australia. School of Surgery and Pathology, 2005. http://theses.library.uwa.edu.au/adt-WU2005.0049.

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[Truncated abstract] Hallux valgus (HV) is one of the most common foot deformities encountered in clinical practice. This complex deformity primarily affects the first metatarsophalangeal joint (MPJ), leading to altered foot structure and function. By virtue of the lateral displacement of the hallux on the first metatarsal, HV has the potential to influence adjacent joints of the foot. In doing so, function of the foot may be altered, and clinically this may result in abduction of the foot during the stance phase of gait. However the relationship between an abducted angle of gait (AOG) and HV has never been substantially examined. The purpose of this study is to investigate the relationship between HV and AOG, and determine if specific radiographic features are associated with the deformity or with a particular AOG. Such information would assist in understanding aetiological factors and the effects of intervention to treat the deformity ... Length and elevation of the first metatarsal were associated in subjects with HV, implying that length of the metatarsal may be related to whether or not it becomes elevated (R: 0.50, CI: 0.21, 0.71, P< 0.05). Similarly, an association was found between length of the first metatarsal and the amount of first MPJ dorsiflexion, suggesting perhaps length of the metatarsal has implications for first MPJ range of motion (R: -0.37, CI: -0.62, -0.04, P<0.05). However the amount of first MPJ dorsiflexion did not influence the AOG in HV subjects when compared to the control group. First MPJ dorsiflexion was also associated with the first intermetatarsal angle. Interestingly, the HV group alone did not show an association between the hallux abductus angle and the first intermetatarsal angle. The findings of this study are contrary to those suspected in clinical practice and alluded to in the literature. Despite the documented support for the biomechanical causes of HV, an abducted AOG was not significantly different in HV subjects when compared to controls. Possible explanations may have related to limitations of the present study including the size and gender demographics of the sample population, and greater variability in normal AOG ranges than reported in the literature. The present study indicated a possible need to gather information regarding foot dominance and leg length; factors extrinsic to the foot capable of influencing transverse plane orientation of the foot; and, the influence of symptoms and subsequent compensatory mechanisms adopted during gait.

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Proudman, Timothy William. "Crouzon syndrome : a clinical and three dimensional radiographic analysis of craniofacial morphology and surgery /." Title page, contents and summary only, 1995. http://web4.library.adelaide.edu.au/theses/09MS/09msp968.pdf.

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Abofatira, Mohamed Farag. "A radiographic analysis of the anterior palate as a donor site for bone harvesting." University of the Western Cape, 2015. http://hdl.handle.net/11394/5040.

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Magister Scientiae Dentium - MSc(Dent)<br>Autologous bone grafting in conjunction with dental implant therapy is a well-accepted procedure in oral and maxillofacial rehabilitation. A variety of intraoral donor sites, such as the mandibular symphysis, the mandibular ramus and the maxillary tuberosity have been used in oral and maxillofacial reconstruction. However these sites are associated with complications. In order to reduce these complications, the anterior palate has been proposed as a potential donor site. However, the scientific literature in this regard is sparse, and larger studies are required to investigate the clinical potential of this proposed site. Aim: To determine the volume and density of available bone in the anterior palate that may be used for bone harvesting using cone-beam computed tomography (CBCT) in a select South African population. Materials and methods: One hundred previously acquired CBCT scans taken at the Diagnostic and Radiology Department of Tygerberg Oral Health Centre were analyzed for the required data. These were all acquired from a single CBCT machine (Newtom VGI®, Verona, Italy). The study sample included 52 females and 48 males ranging from ages 20 years to 80 years. The CBCT scans were divided into 3 different age groups. The first age group was between the ages of 20 and 39 years, the second age group was from 40 to 59 years and the third age group was ≥ 60 years. The volume and density of the anterior palate of the different age groups were analyzed using specific criterion. CBCT specific software (Simplant Pro Crystal®) Dentsply implants, Mannheim, Germany was used to standardize the data collection. All data was stored in a Microsoft Excel spreadsheet (Microsoft Corporation, Washington, USA). Results: The mean volume of the anterior palate in this study was 2.11 ± 0.55 cm3, with a minimum volume of 1.04 cm3 and a maximum volume of 3.82 cm3. There was no significant difference in the volume and density of the anterior palate between different age groups and no significant difference in the volume between males and females (p value = 0.227). Conclusions: The anterior palate affords a considerable amount of bone volume which is similar or even more than other intraoral donor sites. The anterior palate is a potential donor site for bone harvesting and CBCT may be regarded as an ideal tool to analyze the amount of bone available for harvesting.

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Bowman, Scott. "Decision making and judgement in radiographic and sonographic practice : an investigation using decision analysis." Thesis, Open University, 2000. http://oro.open.ac.uk/54564/.

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This is a study into decision making and judgement in the context of radiography. The early part of the study investigated the nature and scope of decisions and judgements made in general radiography and sonography, while the later part focused on the decisions and judgements made by sonographers when breaking bad news to patients. The study is located in a broad interpretative framework, it used an adapted form of phenomenological methodology. A survey and an observational study were used to collect data. In-depth interviews were conducted which used decision analysis (a tool normally used as a decision aid) to elicit participants perceptions and experiences of decision making and judgement. Decision analysis was used in three different ways to collect data. The technique was found to be particularly useful in enabling participants to reflect on their intuitive processes and hence make them overt. The data collected during the observational phase of the study was used to formulate a classification of radiographic decision making and judgement. The study found that the predominant style of decision making and judgement in radiography is intuitive with some evidence of peer-aided decision making and judgement. There is little evidence that the participants use systems aided approaches. Participants found the process of decision analysis interesting but could not relate its use to their own professional practice other than as an educational or de-briefing tool. In sonography it was found that participants had an over-confidence in their diagnostic abilities which influenced their decision making. Sonographers were also found to produce information based on experience, when this information was absent from the decision making scenario provided. On the whole the participants in this study had given little thought to the process of decision making and judgement and the impact of factors such as base rates.

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Tehrany, Arya M. Rivera Eric M. "Outcome study of gutta-percha and Resilon filled root canals a radiographic and clinical analysis /." Chapel Hill, N.C. : University of North Carolina at Chapel Hill, 2009. http://dc.lib.unc.edu/u?/etd,2837.

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Thesis (M.S.)--University of North Carolina at Chapel Hill, 2009.<br>Title from electronic title page (viewed Jun. 4, 2010). "... in partial fulfillment of the requirements for the degree of Master of Science in the Department of Endodontics, School of Dentistry." Discipline: Endodontics; Department/School: Dentistry.

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Lawrence, Herenia Procopio. "Computer-assisted radiographic analysis of caries progression in fluoridated and fluoride-deficient areas in Brazil." Thesis, Queen Mary, University of London, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.341124.

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Books on the topic "Radiographic analysis"

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Radiographic image analysis. 2nd ed. Elsevier Saunders, 2006.

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Chest radiographic analysis. Churchill Livingstone, 1989.

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Radiographic image analysis. 3rd ed. Saunders/Elsevier, 2011.

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An analysis of radiographic quality: Lab manual and workbook. 3rd ed. Aspen Publishers, 1995.

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An analysis of radiographic quality: Lab manual and workbook. 3rd ed. Pro-ed, 2004.

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Turbutt, Ian. Radiographic biomechanical analysis: Notes compiled by I F Turbutt. [s.n.], 1994.

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Highnam, Ralph. Mammographic image analysis. Kluwer Academic Publishers, 1999.

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Dagenais, Marie Edith. An analysis of the radiographic characteristics of histiocytosis x of the jaws. Faculty of Dentistry, University of Toronto, 1988.

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R, Lotz Preston, ed. Correlative neuroradiology: Intracranial radiographic analysis with computed tomography, angiography, and magnetic resonance imaging. 2nd ed. Wiley, 1985.

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Johnston, Douglas H. A radiographic and statistical analysis of the effects of high energy ionizing radiation upon human tooth germ development. Faculty of Dentistry, University of Toronto], 1988.

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Book chapters on the topic "Radiographic analysis"

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Staley, Robert N., and Neil T. Reske. "Radiographic Analysis." In Essentials of Orthodontics Diagnosis and Treatment. John Wiley & Sons, Ltd., 2013. http://dx.doi.org/10.1002/9781118853719.ch5.

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Le Béguec, Pierre, François Canovas, Olivier Roche, Mathias Goldschild, and Julien Batard. "Radiographic Analysis of the Femur." In Uncemented Femoral Stems for Revision Surgery. Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-03614-4_5.

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Morris, R. A., and T. Chancellor. "Algorithm for Dual-Energy Radiographic Analysis." In Review of Progress in Quantitative Nondestructive Evaluation. Springer US, 1995. http://dx.doi.org/10.1007/978-1-4615-1987-4_44.

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Azarpazhooh, Amir. "Radiographic Analysis of Acquired Pathological Dental Conditions." In Endodontic Radiology. John Wiley & Sons, Ltd, 2017. http://dx.doi.org/10.1002/9781119421689.ch10.

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Lai, Jim Yuan, and Bettina Basrani. "Radiographic Analysis of Periodontal and Endodontic Lesions." In Endodontic Radiology. John Wiley & Sons, Ltd, 2017. http://dx.doi.org/10.1002/9781119421689.ch11.

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Klein, Jeffrey S., and Melissa L. Rosado-de-Christenson. "A Systematic Approach to Chest Radiographic Analysis." In IDKD Springer Series. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-11149-6_1.

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Barker, M. D., R. C. Barry, R. A. Betz, P. E. Condon, and L. M. Klynn. "Quantitative Analysis of Real-Time Radiographic Systems." In Review of Progress in Quantitative Nondestructive Evaluation. Springer US, 1987. http://dx.doi.org/10.1007/978-1-4613-1893-4_44.

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Goumeidane, Aicha Baya, Abdessalem Bouzaieni, Nafaa Nacereddine, and Salvatore Tabbone. "Bayesian Networks-Based Defects Classes Discrimination in Weld Radiographic Images." In Computer Analysis of Images and Patterns. Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-23117-4_48.

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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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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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Conference papers on the topic "Radiographic analysis"

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Wen, Hongsheng, Zhiqiang Chen, Jianping Gu, and Qiangqiang Zhu. "Big Data Analysis on Radiographic Image Quality." In 2016 7th International Conference on Cloud Computing and Big Data (CCBD). IEEE, 2016. http://dx.doi.org/10.1109/ccbd.2016.073.

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Jang, Ben K. "Multiscale shape analysis for computed radiographic images." In Medical Imaging 1996, edited by Murray H. Loew and Kenneth M. Hanson. SPIE, 1996. http://dx.doi.org/10.1117/12.237960.

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Lefevre, Mireille, Francoise J. Preteux, and Blandine Lavayssiere. "Radiographic inspection, defects segmentation, and multiscale analysis." In SPIE's 1994 International Symposium on Optics, Imaging, and Instrumentation, edited by Edward R. Dougherty, Paul D. Gader, and Michel Schmitt. SPIE, 1994. http://dx.doi.org/10.1117/12.179184.

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Flores, Miguel Angel Neri, Alberto Martinez Villafañe, and Caleb Carreño. "Failure Analysis of Automotive Ultrasonic Parking Sensors." In ISTFA 2016. ASM International, 2016. http://dx.doi.org/10.31399/asm.cp.istfa2016p0237.

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Abstract Automotive ultrasonic parking sensors were analyzed using X- ray computed tomography (XCT or microtomography), in order to determine if there were internal failures generated on the soldering process between copper wires and piezoelectric ceramic on these sensors. This paper reports the use of X-ray radiography and computer image processing for the study of internal defects. By using X-ray tomography technique, pores, cracks, holes, solder balling, insufficient solder, lead related defects, device related defects, and solder bridging may be identified (1-2). When coupled with a real time radiographic detector and image processor, X-ray technology allows instantaneous radiographic imaging and semi-automatic or totally automatic inspection. Analysis was conducted on six produced test samples showing that the application of XCT as a method of quality control of specimens produced by electronic packaging offers a wide range of possibilities to detect defects within materials. There were determined that five sensors contain internal defects on the soldered joints, between the copper wire, and the piezo electric ceramic covered with silver paint, as shown on the computed tomography. Accuracy of XCT method strongly depends on the size of the samples analyzed, but the possibility of obtaining information in 3D nondestructively shows considerable advantages of XCT method over traditional metallographic cross-sectional analysis.

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Felisberto, Marcelo K., Guilherme A. Schneider, Tania M. Centeno, and Lucia V. R. de Arruda. "Automatic Weld Bead Recognition and Defect Detection in Pipeline Radiographs." In 2006 International Pipeline Conference. ASMEDC, 2006. http://dx.doi.org/10.1115/ipc2006-10429.

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The current work contributes to the research in the area of pipelines non-destructive testing by presenting new methodologies for the automatic analysis of welds radiographs. Object recognition techniques based on genetic algorithms were used for the automatic weld bead detection. In addiction, we developed an image digital filter for the detection of defects in the weld bead zone. These methodologies were tested for 120 digital radiographs from carbon steel pipeline welded joints. These images were acquired by a storage phosphor system using double-wall radiographic exposing technique with single-wall radiographic viewing, according to the ASME V code. As a result, even defects that are hard to be detected by human vision are automatically highlighted and extracted from the whole image to be classified in the further stages of the weld inspection process.

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Dwyer III, Samuel J., Brent K. Stewart, Thomas A. Spraggins, et al. "Modeling of radiographic retrievals: a Markov chain analysis." In Medical Imaging 1993, edited by R. Gilbert Jost. SPIE, 1993. http://dx.doi.org/10.1117/12.152873.

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Caligiuri, Philip, Maryellen L. Giger, Murray Favus, and Kunio Doi. "Multifractal analysis of radiographic bone structure in osteoporosis." In SPIE's 1993 International Symposium on Optics, Imaging, and Instrumentation, edited by Joseph N. Wilson and David C. Wilson. SPIE, 1993. http://dx.doi.org/10.1117/12.146612.

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Felisberto, Marcelo K., Guilherme A. Schneider, Tania M. Centeno, and Lucia V. R. de Arruda. "Automatic Detection of Pipeline Components in Radiographs for Corrosion Monitoring." In 2006 International Pipeline Conference. ASMEDC, 2006. http://dx.doi.org/10.1115/ipc2006-10462.

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This paper introduces new techniques to support industrial radiographic inspection, aiming at automatic corrosion monitoring in pipeline systems. Using the methodologies we proposed, pipeline components to be inspected are automatically detected in the radiographic image, their wall thicknesses are measured and parameters for corrosion detection are computed. For the automatic detection and recognition of pipeline components, we developed a new method that uses image matching techniques in conjunction with genetic algorithms. For measuring the pipe wall thicknesses we used image segmentation techniques based on the analysis of image line profiles. As a result, analysis of pipeline radiographs for corrosion monitoring can be automatically performed, improving the reliability and speed of the inspection process.

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Frosio, I., M. Lucchese, and N. A. Borghese. "A new and reliable Poisson noise estimator for radiographic images." In 14th International Conference on Image Analysis and Processing (ICIAP 2007). IEEE, 2007. http://dx.doi.org/10.1109/iciap.2007.4362862.

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Zhang Xiao-guang, Gao Ding, and Xu Jian-jian. "Generalized fuzzy enhancement of image for radiographic testing weld." In Proceedings of the 4th International Symposium on Image and Signal Processing and Analysis. IEEE, 2005. http://dx.doi.org/10.1109/ispa.2005.195390.

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Reports on the topic "Radiographic analysis"

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Morris, R. A., and T. Chancellor. Algorithm for dual-energy radiographic analysis. Office of Scientific and Technical Information (OSTI), 1994. http://dx.doi.org/10.2172/10103845.

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Wakeford, Daniel, and Gary Salazar. DARHT Radiographic Analysis of Spatially Modulated Objects. Office of Scientific and Technical Information (OSTI), 2021. http://dx.doi.org/10.2172/1821352.

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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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Armstrong, Jerawan C., Brian A. Temple, and Kevin L. Buescher. PyRAT (python radiography analysis tool): overview. Office of Scientific and Technical Information (OSTI), 2011. http://dx.doi.org/10.2172/1047140.

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Temple, Brian Allen, and Jerawan Chudoung Armstrong. LANL12-RS-107J PYTHON radiography analysis tool final report for FY15. Office of Scientific and Technical Information (OSTI), 2015. http://dx.doi.org/10.2172/1215800.

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Temple, Brian A., and Jerawan C. Armstrong. LANL13-RS-107J PYTHON Radiography Analysis Tool Final Report for FY13. Office of Scientific and Technical Information (OSTI), 2013. http://dx.doi.org/10.2172/1095194.

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Joo, H., and S. S. Glickstein. Detailed analyses of dynamic and static errors in neutron radiography testing. Office of Scientific and Technical Information (OSTI), 1999. http://dx.doi.org/10.2172/319778.

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Temple, Brian Allen, and Jerawan Chudoung Armstrong. LANL12-RS-107J PYTHON Radiography Analysis Tool (PyRAT). Mid-Year Deliverable Report for FY15. Office of Scientific and Technical Information (OSTI), 2015. http://dx.doi.org/10.2172/1177993.

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Seetho, I., J. Kallman, W. White, and H. Martz. MicroCT: X-Ray Radiograph Quality Assurance Through the Analysis of Copper Strip Data Using the Matlab CuStrip Analysis GUI. Office of Scientific and Technical Information (OSTI), 2012. http://dx.doi.org/10.2172/1056594.

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Harris, C. L. Digital spall radiograph analysis system: Report on simulated three- dimensional digital spall image reconstruction fidelity. Office of Scientific and Technical Information (OSTI), 1990. http://dx.doi.org/10.2172/434882.

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