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Relevant bibliographies by topics / Computer-Aided Tomography / Dissertations / Theses

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Dissertations / Theses on the topic 'Computer-Aided Tomography'

Author: Grafiati

Published: 25 May 2024

Last updated: 31 July 2025

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1

Fayed, Karam Ali. "Computational Methods for Image Rotation and Computer Aided Tomography Volume I: Theoretical Basi. Volume II: Computer Software." Thesis, Cranfield University, 1993. http://dspace.lib.cranfield.ac.uk/handle/1826/12145.

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This thesis, describes work whose principal goal has been to research and iden- tify an optimum algorithm for computing the Radon transform - optimum in the sense of minimum CPU time for maximum image fidelity. This transform is the basis for a wide range of applications which are either directly or indirectly associ- ated with Computer Aided Tomography. It has therefore been important to try and identify an optimum computational technique for the evaluation of this transform. A central theme to the computational techniques reported in this thesis has been the digital image rotation for which

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Mazinani, Mahdi. "Computer aided detection and measurement of coronary artery disease from computed tomography angiography images." Thesis, Kingston University, 2012. http://eprints.kingston.ac.uk/24527/.

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Coronary artery disease is one of the most pernicious diseases around the world and early identification of vascular disease can help to reduce morbidity and mortality. Assessment of the degree of vascular obstruction, or stenosis, is critical for classifying the risks of the future vascular events. Automatic detection and quantification of stenosis are important in assessing coronary artery disease from medical imagery, especially for disease progression. Important factors affecting the reproducability and robustness of accuarate quantification arise from the partial volume effect and other n

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Qi, Xin. "COMPUTER-AIDED DIAGNOSIS OF EARLY CANCERS IN THE GASTROINTESTINAL TRACT USING OPTICAL COHERENCE TOMOGRAPHY." Case Western Reserve University School of Graduate Studies / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=case1207245243.

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Zhang, Ning. "Quantification of the proliferation of soil fungi in three dimensions using micro-computer aided tomography." Thesis, The University of Sydney, 2015. http://hdl.handle.net/2123/13691.

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Good soil structure is important for sustaining agricultural production and preserving functions of the soil ecosystem. Soil aggregation is a critically important component of soil structure. Stable aggregates enable water infiltration, gas exchange for biological activities of plant roots and microorganisms, living space and surfaces for soil microbes, and contribute to stabilization of organic matter and storage of organic carbon (OC) in soil. Soil aggregation process involves fine roots, organic matter and fungal hyphae. Hyphal proliferation is essential for soil aggregation, and sequestrat

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5

Mazeyev, Yuri. "Direction estimation on 3D-tomography images of jawbones." Thesis, Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE), 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-1661.

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<p>The present work expose a technique of estimation of optimal direction for placing dental implant. A volumetric computed tomography (CT) scan is used as a help of the following searches. The work offers criteria of the optimal implant placement direction and methods of evaluation on direction’s significance. The technique utilizes structure tensor to find a normal to the jawbone surface. Direction of that normal is then used as initial direction for search of optimal direction.</p><p>The technique described in the present work aimed to support doctor’s decisions during dental implantation t

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Sprague, Matthew J. "A Genetic Algorithm Approach to Feature Selection for Computer Aided Detection of Lung Nodules." University of Dayton / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1480465837455442.

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Wu, Bangxian, and 吴邦限. "Clinical applications of imaging informatics: computer aided diagnosis of nasopharyngeal carcinoma based on PET-CTand multimedia electronic patient record system for neurosurgery." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2012. http://hub.hku.hk/bib/B48521917.

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Medical imaging informatics is one of the important research areas in radiology that studies how information available on medical images is retrieved, analyzed, and enhanced. Recent development in medical imaging informatics has resulted in improvement of diagnostic accuracy based on imaging examinations, as well as efficiency in clinical workflow. Computer aided diagnosis (CAD) and electronic patient record system (ePR) are both topics in medical imaging informatics that have matured from research concepts into commercially available computerized systems in clinical environment. The current

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El, Azami Meriem. "Computer aided diagnosis of epilepsy lesions based on multivariate and multimodality data analysis." Thesis, Lyon, 2016. http://www.theses.fr/2016LYSEI087/document.

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Environ 150.000 personnes souffrent en France d'une épilepsie partielle réfractaire à tous les médicaments. La chirurgie, qui constitue aujourd’hui le meilleur recours thérapeutique nécessite un bilan préopératoire complexe. L'analyse de données d'imagerie telles que l’imagerie par résonance magnétique (IRM) anatomique et la tomographie d’émission de positons (TEP) au FDG (fluorodéoxyglucose) tend à prendre une place croissante dans ce protocole, et pourrait à terme limiter de recourir à l’électroencéphalographie intracérébrale (SEEG), procédure très invasive mais qui constitue encore la techn

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Narayanan, Barath Narayanan. "New Classifier Architecture and Training Methodologies for Lung Nodule Detection in Chest Radiographs and Computed Tomography." University of Dayton / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1508237793168873.

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10

Quatrehomme, Auréline. "Caractérisation des lésions hépatiques focales sur des acquisitions scanner multiphasiques." Thesis, Montpellier 2, 2013. http://www.theses.fr/2013MON20207/document.

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L'évolution des techniques d'acquisition des imageries médicales et leur importance de plus en plus grande dans la prise en charge du patient (diagnostic, préparation d'intervention, suivi, etc.), font émerger de nouveaux besoins autour du traitement informatique des images. La reconnaissance du type de lésions hépatiques est un grand enjeu, notamment car le cancer du foie, létal et très répandu, est souvent diagnostiqué trop tard pour sauver le patient. C'est dans ce cadre qu'est né le projet de recherche de ce manuscrit, fruit d'une collaboration entre la société IMAIOS et le Laboratoire d'I

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Dilger, Samantha Kirsten Nowik. "Pushing the boundaries: feature extraction from the lung improves pulmonary nodule classification." Diss., University of Iowa, 2016. https://ir.uiowa.edu/etd/3071.

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Lung cancer is the leading cause of cancer death in the United States. While low-dose computed tomography (CT) screening reduces lung cancer mortality by 20%, 97% of suspicious lesions are found to be benign upon further investigation. Computer-aided diagnosis (CAD) tools can improve the accuracy of CT screening, however, current CAD tools which focus on imaging characteristics of the nodule alone are challenged by the limited data captured in small, early identified nodules. We hypothesize a CAD tool that incorporates quantitative CT features from the surrounding lung parenchyma will improve

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12

Szathvary, Isacco. "Soft and hard tissues in esthetic implant dentistry: a novel 3D computer-aided approach to dimensional changes evaluation in immediate vs delayed implantation treatment." Doctoral thesis, Università degli studi di Padova, 2015. http://hdl.handle.net/11577/3423984.

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Aim of this work is to develop and to validate a structured methodology to investigate the three-dimensional variation that occurs around implants in dentistry. Surgeons need to know in an objective way if what they are doing is correct and if it is the best for the patient. In last decades implantology deeply changed the way to operate of dentists, giving to the patients new opportunities to replace missing teeth. Implantology has known a very big spread all around the world and numbers of patients treated with success is growing year by year. To know exactly what happens around implants i

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13

Viti, Mario. "Automated prediction of major adverse cardiovascular events." Electronic Thesis or Diss., université Paris-Saclay, 2022. http://www.theses.fr/2022UPASG084.

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Dans ce projet de recherche financé en contrat CIFRE avec GE Healthcare, on cherche a prédire les épisodes cardio-vasculaire adverses majeurs (ECAM), c’est à dire typiquement les embolies et les anévrismes dans l’aorte et les artères coronaires, qui donnent lieu a une respectivement à une interruption catastrophique du flux sanguin vers le coeur et donc un infarctus, ou à une hémorragie interne. Les deux types d’épisodes sont extrêmement graves. Lorsqu’un patient est hospitalisé pour une alerte reliée à ces épisodes, il va subir un examen scanner X, injecté ou non, plus ou moins invasif. Un ob

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Marache-Francisco, Simon. "Évaluation de la correction du mouvement respiratoire sur la détection des lésions en oncologie TEP." Phd thesis, INSA de Lyon, 2012. http://tel.archives-ouvertes.fr/tel-00770662.

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La tomographie par émission de positons (TEP) est une méthode d'imagerie clinique en forte expansion dans le domaine de l'oncologie. De nombreuses études cliniques montrent que la TEP permet, d'une part de diagnostiquer et caractériser les lésions cancéreuses à des stades plus précoces que l'imagerie anatomique conventionnelle, et d'autre part d'évaluer plus rapidement la réponse au traitement. Le raccourcissement du cycle comprenant le diagnostic, la thérapie, le suivi et la réorientation thérapeutiques contribue à augmenter le pronostic vital du patient et maîtriser les coûts de santé. La du

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Garali, Imène. "Aide au diagnostic de la maladie d’Alzheimer par des techniques de sélection d’attributs pertinents dans des images cérébrales fonctionnelles obtenues par tomographie par émission de positons au 18FDG." Thesis, Aix-Marseille, 2015. http://www.theses.fr/2015AIXM4364/document.

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Dans le cadre de cette thèse, nous nous sommes intéressés à l’étude de l’apport d’une aide assistée par ordinateur au diagnostic de certaines maladies dégénératives du cerveau, en explorant les images de tomographie par émission de positons, par des techniques de traitement d’image et d’analyse statistique.Nous nous sommes intéressés à la représentation corticale des 116 régions anatomiques, en associant à chacune d’elles un vecteur d’attribut issu du calcul des 4 premiers moments des intensités de voxels, et en y incluant par ailleurs l’entropie. Sur la base de l’aire de courbes ROC, nous avo

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Pádua, Rodrigo Donizete Santana de. "Corregistro de imagens aplicado à construção de modelos de normalidade de SPECT cardíaco e detecção de defeitos de perfusão miocárdica." Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/82/82131/tde-02052012-154125/.

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A análise de imagens médicas auxiliada por computador permite a análise quantitativa das anormalidades e garante maior precisão diagnóstica. Esse tipo de análise é importante para medicina nuclear com Single Photon Emission Computed Tomography (SPECT), pois no grupo de dados tridimensionais de imagens, padrões sutis de anormalidades muitas vezes são importantes achados clínicos. Porém, as imagens podem sofrer interferência de artefatos de atenuação da emissão de fótons por partes moles corporais, o que reduz sua acurácia diagnóstica. Desde que se possuam parâmetros de atenuação computados em u

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17

Yanikian, Fabio. "Comparação em meio digital entre os eixos transversais horizontais mandibulares definidos anatomicamente e por axiografia." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/23/23151/tde-22092016-150926/.

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O objetivo deste estudo foi comparar o eixo de rotação verdadeiro com o anatômico em ambiente virtual 3D, e seus efeitos sobre dois pontos anatômicos mandibulares. O eixo verdadeiro foi determinado em 14 indivíduos por meio de axiografia, e transferido para o ambiente virtual por TCFC, e posteriormente determinado anatomicamente, onde foram medidas as distâncias entre ambos. Foram simuladas rotações de 2º, 5º e 8º da mandíbula nos dois eixos, tanto para abertura como fechamento, e quantificadas as diferenças nos pontos da linha média inferior (LMI) e pogônio (Pg). O teste t pareado foi utiliza

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18

Pan, Xiaoxi. "Towards FDG-PET image characterization and classification : application to Alzheimer's disease computer-aided diagnosis." Thesis, Ecole centrale de Marseille, 2019. http://www.theses.fr/2019ECDM0008.

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La maladie d’Alzheimer (MA) est la maladie neurodégénérative--incurable et irréversible pour le moment--la plus répandue chez les personnes âgées. On s’attend à ce qu’elle soit diagnostiquée à son stade précoce, Mild Cognitive Impairment (MCI), pour pouvoir intervenir et retarder son apparition. La tomographie par émission de positons au fluorodésoxyglucose (TEP-FDG) est considérée comme une modalité efficace pour diagnostiquer la MA et la phase précoce correspondante, car elle peut capturer les changements métaboliques dans le cerveau, indiquant ainsi des régions anormales. Cette thèse est co

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19

Netto, Stelmo Magalhães Barros. "SEGMENTAÇÃO AUTOMÁTICA DE NÓDULOS PULMONARES COM GROWING NEURAL GAS E MÁQUINA DE VETORES DE SUPORTE." Universidade Federal do Maranhão, 2010. http://tedebc.ufma.br:8080/jspui/handle/tede/431.

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Made available in DSpace on 2016-08-17T14:53:07Z (GMT). No. of bitstreams: 1 Stelmo Magalhaes Barros Netto.pdf: 2768924 bytes, checksum: bf6f24780a03adb4f2940b818c95f293 (MD5) Previous issue date: 2010-02-10<br>Conselho Nacional de Desenvolvimento Científico e Tecnológico<br>Lung cancer is still one of the most frequent types throughout the world. Its diagnosis is very difficult because its initial morphological characteristics are not well defined, and also because of its location in relation to the lung. It is usually detected late, fact that causes a large lethality rate. Facing these d

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20

Onyeako, Isidore. "Resolution-aware Slicing of CAD Data for 3D Printing." Thesis, Université d'Ottawa / University of Ottawa, 2016. http://hdl.handle.net/10393/34303.

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3D printing applications have achieved increased success as an additive manufacturing (AM) process. Micro-structure of mechanical/biological materials present design challenges owing to the resolution of 3D printers and material properties/composition. Biological materials are complex in structure and composition. Efforts have been made by 3D printer manufacturers to provide materials with varying physical, mechanical and chemical properties, to handle simple to complex applications. As 3D printing is finding more medical applications, we expect future uses in areas such as hip replacement - w

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21

Huisman, Maximiliaan. "Vision Beyond Optics: Standardization, Evaluation and Innovation for Fluorescence Microscopy in Life Sciences." eScholarship@UMMS, 2019. https://escholarship.umassmed.edu/gsbs_diss/1017.

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Fluorescence microscopy is an essential tool in biomedical sciences that allows specific molecules to be visualized in the complex and crowded environment of cells. The continuous introduction of new imaging techniques makes microscopes more powerful and versatile, but there is more than meets the eye. In addition to develop- ing new methods, we can work towards getting the most out of existing data and technologies. By harnessing unused potential, this work aims to increase the richness, reliability, and power of fluorescence microscopy data in three key ways: through standardization, evaluat

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Shih, Cheng-Ting, and 施政廷. "A novel computed tomography-based computer-aided quantification method." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/vc7s79.

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博士<br>國立清華大學<br>生醫工程與環境科學系<br>103<br>Computed tomography (CT) can rapidly provide high resolution cross-section images. It has become one of the powerful tools in clinical and has been widely applied to achieve a variety of diagnostic and therapeutic purposes. In recent years, number of CT procedures increase year after year with an annual growth rate higher than 10% in Taiwan and in the U.S. Comparing to the other radiological examinations, CT scan delivers relatively high radiation dose to patients. From the view point of radiation protection, medical exposure is justified as long as it foll

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Huang, Po-Ying, and 黃薄迎. "Computer-Aided Detection System for Hepatic Carcinoma Computed Tomography Image." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/46382879025287572444.

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碩士<br>中國醫藥大學<br>臨床醫學研究所碩士班<br>100<br>Hepatic Carcinoma is the most common cancer disease among Taiwan population. With a good and healthy daily life planning, having a regularly health exam can also keep the disease away. Generally speaking, Computer Tomography is the most commonly used instrument in the diagnosis, and the most important part is to define the location and contour of liver tumor, in order to assist the radiologists in diagnosis and pretreatment evaluation. In this study, we develop a semi-automatic computer-aided detection system, which is able to achieve an objective and consi

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Ong, Ju Lynn. "Computer aided detection of polyps in CT colonography." Phd thesis, 2010. http://hdl.handle.net/1885/149805.

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Ji, Dan, and 季丹. "Computer-Aided Diagnosis of Melanoma and ColonCancer Utilizing Mirau-Based Full-Field OpticalCoherence Tomography." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/n3b3xm.

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碩士<br>國立臺灣大學<br>光電工程學研究所<br>106<br>Optical coherence tomography (OCT) is an important three-dimensional optical imaging technique in biomedical realm. It has non-invasive, label-free, and high spatial resolution characteristics. Based on its unique advantages, OCT plays a crucial role in clinical diagnosis in ophthalmology and cardiovascular system. However, in dermatology and gastroenterology, the clinical diagnosis for skin cancer and colon cancer still relies on biopsy, which is an invasive procedure. Biopsy in skin will cause bleeding and may leave scars. For diagnosis of colon cancer, inc

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Chiang, Kuo-Hsien, and 江國賢. "Computer Aided Detection System of Vertebral Metastasis in Patients of Breast Cancer Using Computed Tomography Images." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/01752974014938908725.

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碩士<br>慈濟大學<br>醫學資訊學系碩士班<br>99<br>Bone metastases are commonly diagnosed in patients with advanced breast cancer, especially in vertebrae. Bone metastases can appear lytic, blastic, or anywhere in a continuum between these extremes. The presence or absence of bone metastases is a critical issue in the initial staging and follow-up of breast cancer because it can directly alter the therapeutic strategy. In this paper, we aim to developing a computer-aided diagnosis system for the detection of metastasis in vertebrae at whole body CT. We developed an automated method to extract ROIs of trabecular

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Altarawneh, Nuseiba Mustafa. "3D liver segmentation from abdominal computed tomography scans based on a novel level set model." Thesis, 2017. http://hdl.handle.net/1959.13/1351251.

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Research Doctorate - Doctor of Philosophy (PhD)<br>The liver is one of the most important organs in the human body. It carries out a variety of functions including filtering the blood, making bile and proteins, processing sugar, breaking down medications, and storing iron, minerals, and vitamins. However, the liver is prone to many diseases such as hepatitis C, cirrhosis, and cancer. As computer science and technology advances, computer-aided surgical planning systems have played an important role in the diagnosis and treatment of liver diseases. These systems can present the structures of var

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Yu, Chang-Ching, and 俞長青. "Correlation Study of Tc-99m MDP Whole Body Bone Scan for Metastasis Images and Features between Magnetic Response Images or Computerized Tomography by Computer-Aided Detection Scheme." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/02383862904522560466.

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博士<br>義守大學<br>資訊工程學系<br>104<br>In recent years, whole body bone scan imaging (WBBS) has become an important and widespread diagnostic tool in nuclear medicine due to its high sensitivity and relatively low cost. WBBS is particularly important because it can identify bony metastasis; however, it is limited in some cases; for example, osteolytic bony lesions. Additional factors, such as patients’ individual differences, poor image quality, and doctor experiences, can bias the interpretation of WBBS and affect the accuracy of diagnosis and treatment. Therefore, the development of a computer-aided

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Liao, Chun-Chih, and 廖俊智. "Computer-Aided Diagnosis of Acute Intracranial Hematomas on Computed Tomographic Images." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/68896637393374356939.

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博士<br>臺灣大學<br>醫學工程學研究所<br>98<br>Intracranial hematomas, either traumatic or spontaneous, can produce fatal outcomes because they can produce local pressure on the brain. Accurate diagnosis and rapid decision making are the key factors to good patient outcome. This thesis introduces new methods capable of obtaining the features of the intracranial hematomas in brain CT images. In addition, a new approach of image segmentation integrating binary level set method and multi-resolution processing is proposed. We develop the decision rules to recognize the type of the intracranial hematoma on CT sli

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