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Davidson, Robert Andrew. "Radiographic contrast-enhancement masks in digital radiography". Thesis, The University of Sydney, 2006. http://hdl.handle.net/2123/1932.
Pełny tekst źródłaDavidson, Robert Andrew. "Radiographic contrast-enhancement masks in digital radiography". University of Sydney, 2006. http://hdl.handle.net/2123/1932.
Pełny tekst źródłaRadiographic 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.
Hayre, Christopher Maverick. "Radiography observed : an ethnographic study exploring contemporary radiographic practice". Thesis, Canterbury Christ Church University, 2016. http://create.canterbury.ac.uk/14517/.
Pełny tekst źródłaJackson, Marcus Thomas. "Conceptualising radiography knowledge and the role of radiography educators : perspectives and experiences of a radiography education community". Thesis, Kingston University, 2013. http://eprints.kingston.ac.uk/27737/.
Pełny tekst źródłaGrantham, Stephen Gary. "Digital speckle radiography". Thesis, University of Cambridge, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.619648.
Pełny tekst źródłaPolinsky, Adam S. "Evaluation and Comparison of Periapical Healing Using Periapical Films and Cone Beam Computed Tomography: Post-Treatment Follow Up". VCU Scholars Compass, 2019. https://scholarscompass.vcu.edu/etd/5767.
Pełny tekst źródłaIrvine, Michael Alan, i 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.
Pełny tekst źródłaPascoal, 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.
Pełny tekst źródłaTomko, Craig. "Studies in Dental Radiography". Thesis, Faculty of Dentistry, 1985. http://hdl.handle.net/2123/4278.
Pełny tekst źródłaVerhovsek, Ester L. "Radiography Curriculum Change Update: American Society of Radiologic Technologists". Digital Commons @ East Tennessee State University, 2011. https://dc.etsu.edu/etsu-works/2591.
Pełny tekst źródłaOrafi, Ibtesam. "Aspects of radiography in endodontics". Thesis, University of Manchester, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.506238.
Pełny tekst źródłaKlein, Dennis William. "Low fluence neutron radiography techniques". Thesis, Massachusetts Institute of Technology, 1997. http://hdl.handle.net/1721.1/42613.
Pełny tekst źródłaVenter, Dalene. "Three-dimensional thinking in radiography". Thesis, Cape Peninsula University of Technology, 2008. http://hdl.handle.net/20.500.11838/1564.
Pełny tekst źródłaIntroduction Research to date has not been able to agree whether spatial abilities can be developed by practice. According to some researchers spatial ability is an inherited cognitive ability, compared to spatial skills that are task specific and can be acquired through formal training. It is commonly assumed that radiographers require general cognitive spatial abilities to interpret complex radiographic images. This research was conducted to investigate second year radiography students’ three-dimensional thinking skills pertaining to film-viewing assessments. Materials and methods The experimental research strategy was mainly applied together with correlation research. Two trials were run (in 2005 and 2006). The sample group consisted of fifteen second year diagnostic radiography students in 2005 and twenty-three second year diagnostic radiography students, of the same institution, in 2006. Each year group was randomly divided into a control group and an intervention group. Two instruments were used, that is a film-viewing assessment and a three-dimensional test, Academic Aptitude Test (University) (AAT) nr. nine: Spatial Perception (3-D). The whole class completed this basic spatial aptitude test, as well as a base-line film viewing assessment, which focused on the evaluation of technique/anatomy of second year specialised radiographic projections. The marks that the students achieved in the fore-mentioned tests were compared, to determine if there was any correlation between their performances in the different tests. A curricular intervention, which was intended to improve applied three-dimensional skills, was subsequently applied. The students executed certain modified radiographic projections on parts of a human skeleton. For each radiographic projection, the students had to draw the relation of the X-ray beam to the specific anatomical structures, as well as the relation of these structures to the film. The related images of these projections were also drawn. With each of the following sessions, films including images of the previous session were discussed with each student. After the intervention, the whole class wrote a second film-viewing assessment. The marks achieved in this assessment were compared to the marks of the initial film-viewing assessment to determine the influence of the intervention on the performance of the intervention group. Following this assessment, for ethical reasons, the same intervention took place with the control group. A third film-viewing assessment was then written by all the diagnostic second year students to evaluate the overall impact of the intervention on the applied three-dimensional skills of the class. The marks of both the 2005 and 2006 classes (intervention classes) were compared to the marks achieved by former classes from 2000 to 2004 (control classes), in film-viewing assessments to evaluate the role of the curricular intervention over the years. The students again completed the three-dimensional test, Spatial Perception (3-D) to evaluate the impact of the intervention on students’ general three-dimensional cognitive abilities. These marks were also compared to the marks of the third filmviewing assessment, to determine if there was any correlation between the students’ performances in the different tests. Results The intervention groups did not perform significantly better in film-viewing assessments after the intervention, compared to the control groups, but reasonable differences, favouring the intervention group, were achieved. Statistical significance was achieved in film-viewing assessments with both year groups after the whole class had the intervention. The intervention year groups also performed significantly better than the previous year groups (without the intervention) in film-viewing assessments. The performance in general three-dimensional cognitive abilities of the group of 2006 improved significantly after the intervention, but on the contrary, the performance of the group of 2005 declined. There was a small intervention effect on the performance of the group of 2006. Only a weak to moderate correlation between the marks of the students achieved in the three-dimensional tests and the marks achieved in the film-viewing assessments, was found. Conclusion The contrasting evidence between the data of the two groups (2005 and 2006) in the three-dimensional tests and the small intervention effect on the performance of the group of 2006, makes the intervention not applicable for the increase of general spatial abilities. The results of this research show that the applied three-dimensional skills of radiography students in interpreting specialised and modified projections can be improved by intensive practice, independent of their inherited spatial abilities.
Packer, McKay Barlow. "Comparison of treatment planning decisions when combining CBCT and digital radiography verses digital radiography alone". VCU Scholars Compass, 2016. http://scholarscompass.vcu.edu/etd/4140.
Pełny tekst źródłaJohnson, Kennita A. "Quantifying computed radiography (CR) and digital radiography (DR) image quality and patient dose for pediatric radiology". [Gainesville, Fla.] : University of Florida, 2003. http://purl.fcla.edu/fcla/etd/UFE0001030.
Pełny tekst źródłaJannetta, Adrian. "Advanced deconvolution techniques and medical radiography". Thesis, Northumbria University, 2005. http://nrl.northumbria.ac.uk/164/.
Pełny tekst źródłaWojcik, Randolph Frank. "Dual energy scanning beam X -radiography". W&M ScholarWorks, 2004. https://scholarworks.wm.edu/etd/1539623461.
Pełny tekst źródłaXiao, Xinhua. "Automated Defect Recognition in Digital Radiography". University of Cincinnati / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1439309683.
Pełny tekst źródłaDawson, Martin Nicholas. "Applications of neutron radiography & tomography". Thesis, University of Leeds, 2008. http://etheses.whiterose.ac.uk/1641/.
Pełny tekst źródłaReeves, Pauline Jane. "Models of care in diagnostic radiography". Thesis, Bangor University, 1998. https://research.bangor.ac.uk/portal/en/theses/models-of-care-in-diagnostic-radiography(e3622893-8a99-480c-a38a-6aa1b38eefeb).html.
Pełny tekst źródłaBougeant, Olivier. "Alternative techniques of backscatter radiography Snapshot Aperture Backscatter Radiography and Collimated Segmented Detector Scatter X-ray Imaging /". [Gainesville, Fla.] : University of Florida, 2009. http://purl.fcla.edu/fcla/etd/UFE0025092.
Pełny tekst źródłaChen, Kun. "A study of spectroscopic, cold neutron radiography". [Bloomington, Ind.] : Indiana University, 2006. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3240030.
Pełny tekst źródła"Title from dissertation home page (viewed July 16, 2007)." Source: Dissertation Abstracts International, Volume: 67-10, Section: B, page: 5819. Adviser: Hans-Otto Meyer.
Price, R. "Developing practice in radiography and diagnostic imaging". Thesis, University of Hertfordshire, 2007. http://hdl.handle.net/2299/1056.
Pełny tekst źródłaFelipe-Valera, Elena M. "Professionalism in Radiography| A Multiple Case Study". Thesis, Keiser University, 2019. http://pqdtopen.proquest.com/#viewpdf?dispub=13807028.
Pełny tekst źródłaThis study explored the perceptions that radiography faculty and students have of professionalism in health care. The purpose of this qualitative multiple case study was to understand the substance and the meaning that radiography faculty and students give to professionalism. Learning professionalism in the imaging sciences necessitates emersion in authentic experiences, which the authors call "legitimate peripheral participation," so that skills and didactic knowledge gained in a classroom can be applied in real situations among a community of experts in a field of study (Lave & Wenger, 1991). The research explored the perceptions that RT educators and students have of professionalism by asking the participants to define and describe professionalism and identify what aspects of the professional were meaningful to them. An anonymous survey and focus group discussions were used to gather the perceptions of the participants. The target population for the study was nine faculty members or instructors and ten students from the radiologic technology program of a private, not-for-profit, multi-campus university. These sets of participants were chosen because their firsthand knowledge and experiences of professionalism in the radiography program could aid in addressing the main research and sub-research questions. Both groups defined RT professionalism in terms of respect, empathy, and ethics. Important and meaningful aspects of professionalism included giving competent, compassionate patient care and assisting with diagnosis. The findings revealed that three major areas of professionalism in the imaging sciences must be addressed: interdisciplinary education, intradisciplinary education specifically around professionalism, and the development and implementation of specific competencies that encompass professionalism.
Hudson, Lizel Sandra Ann. "Enhancing academic writing competence in radiography education". Thesis, Cape Peninsula University of Technology, 2011. http://hdl.handle.net/20.500.11838/1554.
Pełny tekst źródłaThis thesis records a study undertaken by a radiography lecturer at a satellite campus of a University of Technology (UoT) in the Western Cape Province of South Africa. The study investigated the academic writing practices of first year Radiation Science learners and focused on an intervention to assist learners to enhance their academic writing competence. Three research questions were addressed: 1. What did radiography learners perceive to be the factors that enabled and constrained their academic writing competence during the first year of academic study?; 2. What were the 2010 first year learners’ perceptions of the changes in their academic writing following an academic writing intervention?; and 3. According to the 2010 first year lecturers, how did the academic writing of the learners change following the intervention? To answer these questions, the research comprised two qualitative approaches: firstly a case study approach, to gain an in-depth understanding of learner writing in radiography; then the insights gained allowed for the design of an appropriate academic writing intervention, carried out in two action research spirals. Thereafter the intervention was evaluated for its impact on learners’ writing competence. The findings and interpretations from this study culminated in a forward looking model that is recommended for use by radiography educators to enhance first year learners’ academic writing competence. The model reflects a zone for the optimal enhancement of academic writing competence for entry-level learners. This ‘zone’ is created in the region of overlap of three contributing factors: collaborative guidance and support, peer mentoring and technology. The model also represents applicable underlying theories (critical theory, constructivism, and academic literacies theory) which provide the theoretical framework for enhanced academic writing competence.
Maschio, Maria Celeste. "Performance evaluation of detector for digital radiography". Master's thesis, Alma Mater Studiorum - Università di Bologna, 2015. http://amslaurea.unibo.it/8317/.
Pełny tekst źródłaYao, Min. "Computed radiography system modeling, simulation and optimization". Thesis, Lyon, INSA, 2014. http://www.theses.fr/2014ISAL0128/document.
Pełny tekst źródłaFor over a century, film-based radiography has been used as a nondestructive testing technique for industrial inspections. With the advent of digital techniques in the medical domain, the NDT community is also considering alternative digital techniques. Computed Radiography (CR) is a cost-efficient and easy-to-implement replacement technique because it uses equipment very similar to film radiography. This technology uses flexible and reusable imaging plates (IP) as a detector to generate a latent image during x-ray exposure. With an optical scanning system, the latent image can be readout and digitized resulting in a direct digital image. CR is widely used in the medical field since it provides good performance at low energies. For industrial inspection, CR application is limited by its poor response to high energy radiation and the presence of scattering phenomena. To completely replace film radiography by such a system, its performance still needs to be improved by either finding more appropriate IPs or by optimizing operating conditions. Guidelines have been addressed in international standards to ensure a good image quality supplied by CR system, where metallic screens are recommended for the case of using high energy sources. However, the type and thickness of such a screen are not clearly defined and a large panel of possible configurations does exist. Simulation is a very useful tool to predict experimental outcomes and determine the optimal operating conditions. The Monte Carlo (MC) methods are widely accepted as the most accurate method to simulate radiation transport problems. It can give insight about physical phenomena, but due to its random nature, a large amount of computational time is required, especially for simulations involving complex geometries. Deterministic methods, on the other hand, can handle easily complex geometry, and are quite efficient. However, the estimation of scattering effects is more difficult with deterministic methods. In this thesis work, we have started with a Monte Carlo simulation study in order to investigate the physical phenomena involved in IP and in metallic screens at high energies. In particular we have studied separately the behavior of X-ray photons and electrons. Some experimental comparisons have been carried out at the European Synchrotron Radiation Facility. Then, we have proposed a hybrid simulation approach, combining the use of deterministic and Monte Carlo code, for simulating the imaging of complex shapes objects. This approach takes into account degradation introduced by X-ray scattering and fluorescence inside IP, as well as optical photons scattering during readout process. Different simulation configurations have been compared
Rivetti, Di Val Cervo Stefano <1975>. "Performance evaluation of detectors for digital radiography". Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2011. http://amsdottorato.unibo.it/3611/1/stefano_rivetti_tesi.pdf.
Pełny tekst źródłaRivetti, Di Val Cervo Stefano <1975>. "Performance evaluation of detectors for digital radiography". Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2011. http://amsdottorato.unibo.it/3611/.
Pełny tekst źródłaKlein, Caroline Gugisch. "Avaliação da arquitetura óssea trabecular por meio de processamento de imagem digital em radiografias panorâmicas". Centro Federal de Educação Tecnológica do Paraná, 2005. http://repositorio.utfpr.edu.br/jspui/handle/1/102.
Pełny tekst źródłaThe purpose of the present work was to modify a skeletonization algorithm and to create an algorithm to quantify radiographic images. A panoramic radiographic digital treatment of 50 volunteers diagnosed as otheoporotics and non-ostheoporotics in a previous work was done. In order to verify the validity of the digital resource, a questionnaire was elaborated that along with the radiographies was distributed among 15 radiologists. The examiners analyzed in a subjective way 99 images, responding which criteria were adopted for the evaluation of the trabecular bone architecture. The data obtained in the applied questionnaire and in the digital image treatment were submitted to a descriptive analysis in order to verify the agreement in the diagnostic hypothesis and to define a golden standard. A ROC curve was built to check the cut point and to establish which Gauss filter was the best, with a variable ratio of 30, 35, 40, 45, or 50. The ratio 30 filter was chosen since it presented the best specificity (94.3%), even having a low sensibility (50%). The agreement levels among the examiners were below 80%. However a high significance among the percentage of black points was registered (p<0.001). The method of image processing trough the skeletonization in panoramic radiographies can become a valuable support for the dentist-surgeons.
Yeo, Daxter Kai Loon. "Distortions in panoramic radiographs /". [St. Lucia, Qld. : s.n.], 2002. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe16647.pdf.
Pełny tekst źródłaAbdelrahman, Magdy Shehata. "Scattering correction and image restoration in neutron radiography and computed tomography". Access restricted to users with UT Austin EID Full text (PDF) from UMI/Dissertation Abstracts International, 2000. http://wwwlib.umi.com/cr/utexas/fullcit?p3025066.
Pełny tekst źródłaYakoubian, Jeffrey Scott. "Adaptive histogram equalization for mammographic image processing". Thesis, Georgia Institute of Technology, 1993. http://hdl.handle.net/1853/16387.
Pełny tekst źródłaMallineni, Sreekanth Kumar. "Radiographic localization of supernumerary teeth in the maxilla". Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2011. http://hub.hku.hk/bib/B46848940.
Pełny tekst źródłaForman, D. "Shared learning : monitoring the attitudinal changes of staff and students on undergraduate health care professional programmes". Thesis, Sheffield Hallam University, 2000. http://shura.shu.ac.uk/19656/.
Pełny tekst źródłaStamatakis, Harry Charalabos. "Physical and psychophysical properties of digital intraoral radiography /". Stockholm, 1999. http://diss.kib.ki.se/1999/91-628-3799-0/.
Pełny tekst źródłaFink, David Walter. "Detecting corrosion in aircraft components using neutron radiography". Thesis, Massachusetts Institute of Technology, 1996. http://hdl.handle.net/1721.1/39993.
Pełny tekst źródłaBorges, Nicholas P. "Improving Imaging Techniques and Resolution in Neutron Radiography". Digital WPI, 2020. https://digitalcommons.wpi.edu/etd-dissertations/604.
Pełny tekst źródłaALBERTIN, Fauzia. "K-edge Radiography and applications to Cultural Heritage". Doctoral thesis, Università degli studi di Ferrara, 2011. http://hdl.handle.net/11392/2388734.
Pełny tekst źródłaLucchese, M. "TOTAL VARIATION POISSON NOISE REMOVAL IN DIGITAL RADIOGRAPHY". Doctoral thesis, Università degli Studi di Milano, 2012. http://hdl.handle.net/2434/203243.
Pełny tekst źródłaLey, Paul J. "An in-vitro comparison of working length determination between a digital system and conventional film when source-film/sensor distance and exposure time are modified". Connect to resource online, 2009. http://hdl.handle.net/1805/1928.
Pełny tekst źródłaTitle from PDF t.p. (viewed Aug. 11, 2009) Advisors: Mychel Vail, Chair of the Research Committee, Susan Zunt, Ted Parks, Kenneth Sponik, Joseph Legan. Curriculum vitae. Includes abstract. Includes bibliographical references (leaves 103-119).
Elhain, Ahmed M. S. B. "An investigation of the influence of radiographic malpositioning and image processing algorithm selection on ICU/CCU chest radiographs". Thesis, University of Bradford, 2013. http://hdl.handle.net/10454/7342.
Pełny tekst źródłaBrooks, Kenneth W. "Automated analysis of mammography phantom images". Diss., Georgia Institute of Technology, 1993. http://hdl.handle.net/1853/17900.
Pełny tekst źródłaPeng, Jinghong P. "Automated acceptance criteria for the American College of Radiology (ACR) mammographic accreditation phantom images". Thesis, Georgia Institute of Technology, 1991. http://hdl.handle.net/1853/18248.
Pełny tekst źródła湯添發 i Thiam-huat Tng. "Validity of cephalometric landmarks". Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1991. http://hub.hku.hk/bib/B38628399.
Pełny tekst źródłaSnaith, Beverly. "Development of the radiography evidence base: An examination of advancing practice". Thesis, University of Bradford, 2013. http://hdl.handle.net/10454/6314.
Pełny tekst źródłaPlease Note: The full text of each of the published articles, which are listed on page vii, has been removed from the PhD online copy due to publisher copyright restrictions. Links to the publisher¿s websites are given. To see the final full text version of the articles listed on page vii, please visit the publisher¿s website. Available access to the published online version may require a subscription.
Odau, James R. "Determining applicant aptitude as a predictor of success in a radiography program". Online version, 1999. http://www.uwstout.edu/lib/thesis/1999/1999odauj.pdf.
Pełny tekst źródłaWoodward, Stephanie. "Development and applications of a pulsed neutron radiography system". Thesis, Imperial College London, 1987. http://hdl.handle.net/10044/1/46916.
Pełny tekst źródłaGobbi, David G. "A high-pressure gas microstrip detector for digital radiography". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/MQ27049.pdf.
Pełny tekst źródłaHunter, David MacKenzie. "Digital radiography by laser-scanned readout of amorphous selenium". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1996. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/MQ45465.pdf.
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