Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 207 for “"radiographs"”.
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Image Features for Tuberculosis Classification in Digital Chest Radiographs
… care may be limited. Analysis of digital chest radiographs (CXRs) is a common and inexpensive method for the diagnosis of TB; however, a trained radiologist is required to interpret the results, and is subject to human error. Computer-Aided Detection (CAD) systems are a promising …
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Diagnostic Yield of Cervical Radiographs in Infants with Deformational Plagiocephaly
The general metadata -- e.g., title, author, abstract, subject headings, etc. -- is publicly available, but access to the submitted files is restricted to UT Southwestern campus access and/or authorized UT Southwestern users.
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Digital subtraction radiography for monitoring carious lesions using clinical radiographs
… saliva. Many diagnostic tools are available, but radiographs are the most common.<br/><br/>Dental caries diagnosis using radiographs is carried out by dental professionals everywhere. One of the most challenging current problems is to determine whether a carious lesion is static, progressing or …
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Assessment of airway compression on chest radiographs in children with pulmonary tuberculosis
… the surrounding mediastinal structures on radiographs, thus airway compression may serve as a more objective criterion for diagnosing PTB. Many studies have reviewed the radiographic features of PTB in children but few included airway compression or used a control group and none have …
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Digital Dissection of Radiographs, Using the Early Cretaceous Bird Confuciusornis and Photoshop CS2TM
In the past, radiographs (x-ray "shadowgraphs") have been used by paleontologists as ways to identify and capture bone images. Primarily, this was done to examine the skeletal elements without having to remove the surrounding matrix. Radiographs have so much three-dimensional information …
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Detection of Tubes in Radiographs Using Canny Edge Detection and Progressive Hough Transforms
… for detecting tubes and catheters in chest radiographs could improve patient safety and healthcare efficiency by helping radiologists to more quickly and accurately identify mal-positioned tubes. We propose a method for automatically detecting tubes that first uses a Canny edge detector for …
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An Evaluation of Root Length Change Measurements using Intraoral Scan and Panoramic Radiographs
… to evaluate the accuracy of using panoramic radiographs to measure root length change over the course of orthodontic treatment, using intraoral scans of crowns, and a mathematical model to account for distortions in the radiographs. The study additionally evaluated whether a best-fit equation …
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A Study of Craniofacial Asymmetry in Monozygotic and Dizygotic Twins Using Posteroanterior Radiographs
… twins and sibling pairs. Posteroanterior radiographs that had previously been collected were used in this study and the zygosity of the twins had previously been determined. We hypothesized that in this study measuring craniofacial asymmetry there would be a greater concordance between …
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Variation in treatment: an analysis of dental radiographs using matched patient provider data
… in a specific dental care treatment (dental radiographs) within NHS Scotland, with particular emphasis on the contribution of both dentist and patient unobserved heterogeneity. The thesis takes its focus from two strands of the literature; the underlying theoretical aspect draws on the …
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The role of computerised tomographic angiograms (CTA) and lateral neck radiographs in penetrating neck oesophageal injuries
… time-consuming MDCTA’s and lateral soft tissue radiographs usually performed before the contrast swallow studies can also be used to diagnose POI’s. This will reduce dependence and possibly exclude the contrast swallow study, thus reducing the time delay in POI pre-operative investigations. …
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The use of Röntgen rays in intra-thoracic disease : with notes and radiographs of a series of cases
In introducing the subject of the use of Rontgen Rays in intra-thoracic diseases, the best plan to me seems to be to aggregate some of the more authoritative or striking statements in the literature as to apparatus, as to the general utility of the rays in this aspect of medicine and as to …
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An investigation of the influence of radiographic malpositioning and image processing algorithm selection on ICU/CCU chest radiographs
… position of the CVC/ETT on 17 mobile chest radiographs provide limited useful information to the image interpreter in estimating the degree of angulation and degree of malpositioning of the tube and line.
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A retrospective audit of the clinical value of routine chest radiographs in the first 24 hours after cardiac surgery using medical records
… outside Africa, have shown that these chest radiographs are of low clinical value, mainly due to limited impact on patient management. Following cardiac surgery and admission to ICU, chest radiographs are obtained in order to ensure proper position of all invasive devices such as endotracheal …
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The impact alteration of X-ray source subject projection geometry has on the ability to detect demineralisation in occlusal cavities using digital subtraction radiography: an in-vitro study
… reproducible compared to pairwise comparison of radiographs. The aim of this research project was to investigate in-vitro, whether alteration of X-ray source subject projection geometry affected the accuracy and reproducibility of DSR for detecting demineralisation in artificially created …
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A Radiographic Analysis of Variance in Lower Incisor Enamel Thickness
… 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 …
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Precision Diagnostics of Donor Lungs Ex Vivo
… analyzed findings in clinical ex vivo lung radiographs, and then developed a convolutional neural network (CNN) pipeline to simultaneously process temporal radiographs from different time points. We demonstrated the value of evaluating EVLP radiographs by showing that consolidation and …
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Bone Density Measurement via Radiographic Calibration
… 0.28, <em>p</em> < 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.</p> <p>We hypothesized that the decrease in the …
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Radiographic Union Score for Tibia (RUST) scoring system in adult diaphyseal femoral fractures treated with intramedullary nailing: an assessment of interobserver and intraobserver reliability
… of 60 sets of anteroposterior (AP) and lateral radiographs of diaphyseal femoral fractures treated by reamed IM nailing were randomly selected from a prospectively collected database. The 60 sets of radiographs were then scored by three reviewers using the RUST system. Interobserver reliability …
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Panoramic Radiographic Diagnosis of Molar-Incisor Hypomineralization in Permanent Dentition
… evaluate the diagnostic potential of panoramic radiographs for identifying Molar–Incisor Hypomineralization (MIH) in the permanent dentition of children and to compare the diagnostic performance of pediatric dental specialists with that of other dental professionals. Methods: This …
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