Dissertations / Theses on the topic '3D pathology'
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Al-Kwifi, Osama. "Development of 3D magnetic resonance angiography for the detection of vascular pathology." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ60407.pdf.
Full textMeija, Jorge, Richard Van Hoesel, Anna O'Brien, Ingrid McClelland Yeend, Cong-Van M. Nguyen, Earl E. Johnson, and Harvey Dillon. "Acoustic Simulation Using 3d Modeling of the Development of a Super-directional System, past, Present and Future." Digital Commons @ East Tennessee State University, 2014. https://dc.etsu.edu/etsu-works/1759.
Full textOgunleke, Abiodun. "Imagerie chimique 3D de tumeurs du cerveau." Thesis, Bordeaux, 2019. http://www.theses.fr/2019BORD0040/document.
Full textThree-dimensional (3D) histology is a new advanced tool for cancerology. The whole chemical profile and physiological characteristics of a tissue is essential to understand the rationale of pathology development. However, there is no analytical technique, in vivo or histological, that is able to discover such abnormal features and provide a 3D distribution at microscopic resolution.Here, we introduce a unique high- throughput infrared (IR) microscopy method that combines automated image correction and subsequent spectral data analysis for 3D-IR image reconstruction. I performed spectral analysis of a complete organ for a small animal model, a mouse brain with animplanted glioma tumor. The 3D-IR image is reconstructed from 370 consecutive tissue sectionsand corrected using the X-ray tomogram of the organ for an accurate quantitative analysis of thechemical content. A 3D matrix of 89 x 106 IR spectra is generated, allowing us to separate the tumor mass from healthy brain tissues based on various anatomical, chemical, and metabolic parameters. I demonstrate for the first time that quantitative metabolic parameters (glucose, glycogen and lactate) can be extracted and reconstructed in 3D from the IR spectra for the characterization of the brain vs. tumor metabolism (assessing the Warburg effect in tumors). Our method can be further exploited by searching for the whole spectral profile, discriminating different anatomical landmarks in the brain. I demonstrate this by the reconstruction of the corpus callosum and basal ganglia region of the brain
Swenson, Robert David. "The effects of bioprinting materials on HEPM cell proliferation and cytokine release." Thesis, University of Iowa, 2018. https://ir.uiowa.edu/etd/6299.
Full textVijayan, Suvendra. "Reliability of 3D-printed mandibles constructed from CBCT volumes of different voxel sizes." Thesis, University of Iowa, 2018. https://ir.uiowa.edu/etd/6323.
Full textErdogmus, Nesli. "Utilisation des données 3D pour la reconnaissance du visage." Phd thesis, Télécom ParisTech, 2012. http://pastel.archives-ouvertes.fr/pastel-00982374.
Full textNamati, Eman, and eman@namati com. "Pre-Clinical Multi-Modal Imaging for Assessment of Pulmonary Structure, Function and Pathology." Flinders University. Computer Science, Engineering and Mathematics, 2008. http://catalogue.flinders.edu.au./local/adt/public/adt-SFU20081013.044657.
Full textSweet, David Ryan. "Kruppel-Like Factor 2 Regulation of Aging and Healthspan: A Link Between the 3D Nucleome and Disease." Case Western Reserve University School of Graduate Studies / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=case1619459260412975.
Full textMichel, Fabrice. "Multi-Modal Similarity Learning for 3D Deformable Registration of Medical Images." Phd thesis, Ecole Centrale Paris, 2013. http://tel.archives-ouvertes.fr/tel-01005141.
Full textJensen, Lauren Elizabeth. "Mechanical preparation of oval-shaped root canals in mandibular premolars with the TRUShape 3D Conforming File: a micro-computed tomography study." Thesis, University of Iowa, 2017. https://ir.uiowa.edu/etd/5523.
Full textMassot, Corentin. "Texture et Perception 3D dans les Scènes Naturelles : Modèles d'Inspiration Biologique et Expérimentations Psychophysiques." Phd thesis, Université Joseph Fourier (Grenoble), 2006. http://tel.archives-ouvertes.fr/tel-00207512.
Full textNous présentons d'abord des expérimentations psychophysiques où nous avons cherché à évaluer la contribution relative des indices de variation de fréquence et de perspective linéaire pour la perception 3D.
Pour cela nous avons créé des stimuli spécifiques représentant des textures homogènes composées de masques de Gabor disposés sur une surface plane.
Le plan est vu en projection perspective suivant une inclinaison (slant) et une orientation (tilt) particulière.
La fréquence et l'orientation de chaque masque de Gabor sont déterminées en fonction du gradient de fréquence local et de la perspective linéaire locale définis par la projection.
Nous synthétisons ainsi des textures présentant uniquement une variation de fréquence ou une variation d'orientation ou les deux types de variation (en combinaison ou en conflit).
Pour chaque texture, une tâche de discrimination du slant et du tilt est effectuée. L'indice de variation de fréquence apparaît prépondérant dans l'estimation de l'inclinaison d'une surface par rapport à la perspective linéaire.
Par contre les deux indices jouent un role dans l'estimation de l'orientation.
Ces résultats valident l'utilisation de nos stimuli pour la perception 3D et permettent de préciser la décomposition de l'indice de texture en composantes élémentaires.
Basé sur cette approche, nous présentons un modèle biologiquement plausible d'analyse de la variation de fréquence au niveau de V1.
Nous modélisons la réponse des cellules complexes par des filtres log-normaux à variables séparables présentant différents avantages théoriques et pratiques par rapport aux filtres de Gabor classiquement utilisés.i
L'algorithme se compose d'une étape de prétraitement composé d'un filtrage rétinien pour ne conserver que les informations de texture et d'une décomposition de l'image en un ensemble d'imagettes similairement aux champs récepteurs des cellules corticales.
Une technique robuste d'estimation de la fréquence moyenne locale, indépendante de l'information d'orientation et correspondant à une combinaison simple de lensemble des filtres est appliquée à chaque imagette.
La mesure de la variation locale de fréquence entre chaque imagette permet d'estimer le tilt et le slant de la surface étudiée ainsi que sa forme.
La méthode est évaluée sur différentes bases d'images et de textures. Elle s'avère comparable en précision aux autres techniques et s'applique à des textures irrégulières avec une moindre complexité calculatoire.
Mauconduit, Franck. "Imagerie cérébrale par résonance magnétique du tenseur de diffusion : de la modélisation à l'imagerie 3D haute résolution. Applications et "fibre tracking" dans un modèle de schizophrénie chez la souris." Phd thesis, Université de Grenoble, 2011. http://tel.archives-ouvertes.fr/tel-00721763.
Full textVILLENA, PHILIPPE. "Traitement laser des affections prostatiques : etude de faisabilite en imagerie 2d et 3d." Reims, 1993. http://www.theses.fr/1993REIMM050.
Full textBalocco, Simone. "3D dynamic ultrasonic model of pathologic artery : application to the assessment of arterial wall mechanical parameters." Lyon 1, 2006. http://www.theses.fr/2006LYO10145.
Full textA mathematic multiphysics 3D model reproducing the biomechanical behavior of human vessels and the related echographic imaging has been developed. The geometry of the model is a multi layer structure based on right generalized cylinders (RGC) and enabling the representation of pathological and healthy vessel structures (stenoses and bifurcations). The blood flow has been simulated considering a dynamical displacement of the erythrocytes and a mechanical model enables the computation of the arterial wall pulsation due to the hydraulic flow pressure. An acoustic characterization of each region has been performed, and radiofrequency signals has been obtained in order to reproduce ultrasound images. The research project has been focused on two main application which represent respectively a simulation and a dignostic support tools
Colin, Arnaud. "Etude de methodes de recalage et de fusion d'images 3d du cerveau ; application au suivi d'une pathologie cerebrale." Clermont-Ferrand 1, 1997. http://www.theses.fr/1997CLF1MM13.
Full textKirchhöfer, Daniel [Verfasser], and Bernd [Akademischer Betreuer] Jähne. "Effiziente Verarbeitungskette für 3D Bilddaten unter Berücksichtigung des Bildaufnahmerauschens am Beispiel der Pathologie / Daniel Kirchhöfer ; Betreuer: Bernd Jähne." Heidelberg : Universitätsbibliothek Heidelberg, 2021. http://d-nb.info/1239116225/34.
Full text"Dual-View Inverted Selective Plane Illumination Microscopy (diSPIM) Imaging for Accurate 3D Digital Pathology." Tulane University, 2020.
Find full textFor decades, histopathology and cytology have provided the reference standard for cancer diagnosis, prognosis prediction and treatment decisions. However, they are limited to 2D slices, which are created via cutting and/or smearing, thus not faithfully representing the true 3D structures of the cellular or tissue material. Multiple imaging methods have been utilized for non-destructive histologic imaging of tissues, but are usually limited by varying combinations of low resolution, low penetration depth, or a relatively slow imaging speed, and all suffer from anisotropic resolution, which could distort 3D tissue architectural renderings and thus hinder new work to analyze and quantify 3D tissue microarchitecture. Therefore, there is a clear need for a non-destructive imaging tool that can accurately represent the 3D structures of the tissue or cellular architecture, with comparable qualities and features as traditional histopathology. In this work, dual-view inverted selective plane illumination microscopy (diSPIM) has been customized and optimized for fast, 3D imaging of large biospecimens. Imaging contrast of highly scattering samples has been further improved by adding confocal detection and/or structured illumination (SI) as additional optional imaging modes. A pipeline of dual-view imaging and processing has also been developed to achieve more isotropic 3D resolution, specifically on DRAQ5 and eosin (D&E) stained large (millimeter to centimeter size) biopsies. To determine the impact of 3D, high-resolution imaging on clinical diagnostic endpoints, multiple prostate cancer (PCa) biopsies have been collected, imaged with diSPIM, and evaluated by pathologists. It has been found that the pathologist is “equally” confident on the PCa diagnosis from viewing 3D volumes and 2D slices, and the diagnostic agreement between 3D volumes is significantly higher than 2D slices. The high-resolution and large-volume coverage of diSPIM may also help verify results from other lower-resolution modalities by serving as a 3D histology surrogate. Tissue correlations have been found between images acquired by diSPIM and photo-acoustic imaging, or by diSPIM and biodynamic imaging, proving diSPIM as a useful tool to aid in validation of lower-resolution imaging tools. The potential of diSPIM imaging has also been demonstrated in other applications, such as in the study of in-vitro neural models.
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Lochovská, Kateřina. "Vznik lidských zubních anomálií na modelu odontogeneze u myší s poruchami genů." Master's thesis, 2012. http://www.nusl.cz/ntk/nusl-312521.
Full textPerry, Jamie. "Magnetic resonance imaging and 3D computer modeling of the levator veli palatini muscle before and after primary palatoplasty /." 2007. 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:3301270.
Full textSource: Dissertation Abstracts International, Volume: 69-02, Section: B, page: 0981. Adviser: David Kuehn. Includes supplementary digital materials. Includes bibliographical references (leaves 123-127) Available on microfilm from Pro Quest Information and Learning.