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Relevant bibliographies by topics / Soft tissue simulation / Dissertations / Theses

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Dissertations / Theses on the topic 'Soft tissue simulation'

Author: Grafiati

Published: 11 March 2023

Last updated: 31 July 2025

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1

Golec, Karolina. "Hybrid 3D Mass Spring System for Soft Tissue Simulation." Thesis, Lyon, 2018. http://www.theses.fr/2018LYSE1004/document.

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La nécessité de simulations de tissus mous, tels que les organes internes, se pose avec le progrès des domaines scientifiques et médicaux. Le but de ma thèse est de développer un nouveau modèle générique, topologique et physique, pour simuler les organes humains. Un tel modèle doit être facile à utiliser, doit pouvoir effectuer des simulations en temps réel avec un niveau de précision permettant l'utilisation à des fins médicales. Cette thèse explore de nouvelles méthodes de simulation et propose des améliorations pour la modélisation de corps déformables. Les méthodes proposées visent à pouvo

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2

Duysak, Alpaslan. "Efficient techniques for soft tissue modeling and simulation." Thesis, Bournemouth University, 2004. http://eprints.bournemouth.ac.uk/446/.

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Performing realistic deformation simulations in real time is a challenging problem in computer graphics. Among numerous proposed methods including Finite Element Modeling and ChainMail, we have implemented a mass spring system because of its acceptable accuracy and speed. Mass spring systems have, however, some drawbacks such as, the determination of simulation coefficients with their iterative nature. Given the correct parameters, mass spring systems can accurately simulate tissue deformations but choosing parameters that capture nonlinear deformation behavior is extremely difficult. Since mo

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3

Schill, Markus A. "Biomechanical soft tissue modeling techniques, implementation and application /." [S.l. : s.n.], 2002. http://www.bsz-bw.de/cgi-bin/xvms.cgi?SWB10605020.

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4

Comas, Olivier. "Real-time Soft Tissue Modelling on GPU for Medical Simulation." Phd thesis, Université des Sciences et Technologie de Lille - Lille I, 2010. http://tel.archives-ouvertes.fr/tel-00561299.

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Modéliser la déformation de structures anatomiques en temps réel est un problème crucial en simulation médicale. En raison des grandes différences existantes dans leur forme et leur constitution, un modèle unique est insuffisant face à la variété des comportements mécaniques. Par conséquent, nous avons identifié deux principaux types de structures: les organes pleins (cerveau, foie, prostate etc.) et les organes creux (colon, vaisseaux sanguins, estomac etc.). Notre réponse à cette problématique est double. Notre première contribution est une implémentation GPU d'un modèle éléments finis qui e

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5

Teschner, Matthias. "Direct computation of soft tissue deformation in craniofacial surgery simulation /." Aachen : Shaker, 2001. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=009236357&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.

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6

Chen, Zhuo-Wei. "Simulation numérique du comportement dynamique des organes pelviens." Thesis, Evry-Val d'Essonne, 2013. http://www.theses.fr/2013EVRY0009/document.

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Le prolapsus des organes pelviens (vessie, rectum, utérus, vagin) est un problème de santé qui touche de plus en plus de femmes. Ce trouble, dont la fréquence augmente avec le vieillissement de la population, altère inévitablement la qualité de vie des malades. Pour autant, les causes de cette pathologie sont mal connues et les pratiques chirurgicales demeurent mal évaluées. La réalisation d’un simulateur du comportement dynamique des organes pelviens permettant au chirurgien d’estimer l’impact fonctionnel de son geste avant sa réalisation est donc un besoin identifié. Ce travail concerne ains

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7

Lu, Yongtao. "Soft tissue modelling and facial movement simulation using the finite element method." Thesis, Cardiff University, 2010. http://orca.cf.ac.uk/54369/.

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This thesis presents a framework for soft tissue modelling, facial surgery simulation, and facial movement synthesis based on the volumetric finite element method. Assessment of facial appearance pre- and post-surgery is of major concern for both patients and clinicians. Pre-surgical planning is a prerequisite for successful surgical procedures and outcomes. Early computer-assisted facial models have been geometrically based. They are computationally efficient, but cannot give an accurate prediction for facial surgery simulation. Therefore, in this thesis, the emphasis is placed on physically-

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8

Faraci, Alessandro. "A multiresolution nonlinear finite element approach to real-time simulation of soft tissue deformation with haptic feedback." Thesis, Imperial College London, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.430145.

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9

Nilsson, Linus. "Real-time simulation of diaphragm displacement during physiological and mechanical ventilation." Thesis, Uppsala universitet, Avdelningen för beräkningsvetenskap, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-202329.

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This thesis presents a tunable 3D real-time interactive simulator of the geometrical displacement of the thoracic diaphragm during physiological and mechanical ventilation. Particular attention is placed on capturing the heterogeneous tissue composition while maintaining computational efficiency and accuracy. The long term goal is to establish an accurate theoretical model to complement the experimental and clinical studies of the side effects associated with mechanical ventilation and to overcome the ethical difficulties of performing time resolved studies on human patients. The deformations

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10

Visconti, Maria Augusta Portella Guedes 1985. "Validity of water and acrylic as soft tissue simulation materials in an in vitro study using cone beam computed tomography." [s.n.], 2014. http://repositorio.unicamp.br/jspui/handle/REPOSIP/290177.

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Orientador: Francisco Haiter Neto<br>Texto em português e inglês<br>Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Odontologia de Piracicaba<br>Made available in DSpace on 2018-08-24T17:16:38Z (GMT). No. of bitstreams: 1 Visconti_MariaAugustaPortellaGuedes_D.pdf: 2357684 bytes, checksum: ed042e1f5da51d27eae5691a052e4cc3 (MD5) Previous issue date: 2014<br>Resumo: O presente estudo propôs-se validar os materiais água e acrílico como simuladores de tecidos moles em um estudo in vitro realizado com tomografia computadorizada de feixe cônico (TCFC). Para isso foram utilizadas

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11

Ma, Jiajie. "Accuracy and reliability of non-linear finite element analysis for surgical simulation." University of Western Australia. School of Mechanical Engineering, 2006. http://theses.library.uwa.edu.au/adt-WU2010.0089.

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In this dissertation, the accuracy and reliability of non-linear finite element computations in application to surgical simulation is evaluated. The evaluation is performed through comparison between the experiment and finite element analysis of indentation of soft tissue phantom and human brain phantom. The evaluation is done in terms of the forces acting on the cylindrical Aluminium indenter and deformation of the phantoms due to these forces. The deformation of the phantoms is measured by tracking 3D motions of X-ray opaque markers implanted in the direct neighbourhood under the indenter us

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12

Delventhal, Brooke. "Simulation-Based Stability Tests in Total Knee Arthroplasty: Are Component Alignment, KneeLaxity, and Tibiofemoral Contact Forces Related?" The Ohio State University, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=osu1574422948246589.

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13

Potvin, Brigitte. "Predicting Muscle Activations in a Forward-Inverse Dynamics Framework Using Stability-Inspired Optimization and an In Vivo-Based 6DoF Knee Joint." Thesis, Université d'Ottawa / University of Ottawa, 2016. http://hdl.handle.net/10393/34647.

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Modeling and simulations are useful tools to help understand knee function and injuries. As there are more muscles in the human knee joint than equations of motion, optimization protocols are required to solve a problem. The purpose of this thesis was to improve the biofidelity of these simulations by adding in vivo constraints derived from experimental intra-cortical pin data and stability-inspired objective functions within an OpenSim-Matlab forward-inverse dynamics simulation framework on lower limb muscle activation predictions. Results of this project suggest that constraining the model

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14

Moreira, Hipólito Douglas França. "Deformação de tecidos moles para simuladores médicos: uma abordagem sem malha." Universidade de São Paulo, 2015. http://www.teses.usp.br/teses/disponiveis/100/100131/tde-25012016-172839/.

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Esta dissertação de mestrado propõe o estudo e a implementação de um método de deformação usando modelos tridimensionais sem o uso de malhas baseado na técnica Smoothed Particles Hydrodynamics (SPH), que consiste num sistema de resolução de equações diferenciais para aplicação de conceitos físicos para simular deformação de tecidos moles. A opção pelo método sem malha para processo de deformação é apresentado nesta dissertação como alternativa a um dos métodos mais comuns em simulação de deformação de tecidos, o método massa-mola, explorando questões referentes ao uso de recursos computaciona

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15

Wijanto, Florent. "Multiscale mechanics of soft tissues." Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLX093.

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Les réseaux de fibre sont une structure omniprésente dans les tissus biologiques, aussi bien au niveau macroscopique, où ils sont l'ingrédient principal des tissus mous, qu'au niveau microscopique, en tant que constituants des structures collagèniques ou du cytosquelette. L'objectif de ce travail de thèse est de proposer un modèle basé sur la microstructure physique des réseaux de fibres afin d'obtenir une compréhension du comportement mécanique des réseaux de fibres biologiques. Le modèle est basé sur une description de fibres glissant les unes par rapport aux autres et interagissant via des

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16

Cavalcanti, Ebenézer Silva. "Desenvolvimento de um sistema para medida elastográfica dinâmica por ultrassom." Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/59/59135/tde-01122012-112131/.

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Este trabalho aborda o desenvolvimento de um aparato instrumental para efetuar medidas elastográficas por ultrassom. No qual foi considerado a elastografia tradicional que busca analisar as propriedades mecânicas de viscosidade e elasticidade de um meio, através da compressão e descompressão, de modo a simular o processo de palpação utilizado pelos médicos para avaliar a rigidez de um tecido, pois é sabido que estas mudanças estão relacionados a alguma forma de lesão do tecido biológico. Para alcançar tal propósito, foi construído simuladores de tecidos moles com características mecânicas próx

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17

Mishra, Shikta. "Modeling and Simulation of Cutting in Soft Biological Tissues for Surgical Simulation." University of Cincinnati / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1352994028.

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18

Deram, Aurélien. "Environnement générique pour la validation de simulations médicales." Thesis, Grenoble, 2012. http://www.theses.fr/2012GRENS022/document.

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Dans le cadre des simulations pour l'entrainement, le planning, ou l'aide per-opératoire aux gestes médicaux-chirurgicaux, de nombreux modèles ont été développés pour décrire le comportement mécanique des tissus mous. La vérification, la validation et l'évaluation sont des étapes cruciales en vue de l'acceptation clinique des résultats de simulation. Ces tâches, souvent basées sur des comparaisons avec des données expérimentales ou d'autres simulations, sont rendues difficiles par le nombre de techniques de modélisation existantes, le nombre d'hypothèses à considérer et la difficulté de réalis

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19

De, Novi Gianluca <1975&gt. "Soft tissue modeling for virtual reality surgery simulator with haptic feedback." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2011. http://amsdottorato.unibo.it/3702/1/DeNovi_Gianluca_tesi.pdf.

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20

De, Novi Gianluca <1975&gt. "Soft tissue modeling for virtual reality surgery simulator with haptic feedback." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2011. http://amsdottorato.unibo.it/3702/.

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21

Staber, Brian. "Stochastic analysis, simulation and identification of hyperelastic constitutive equations." Thesis, Paris Est, 2018. http://www.theses.fr/2018PESC1042/document.

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Le projet de thèse concerne la construction, la génération et l'identification de modèles continus stochastiques, pour des milieux hétérogènes exhibant des comportements non linéaires. Le domaine d'application principal visé est la biomécanique, notamment au travers du développement d'outils de modélisation multi-échelles et stochastiques, afin de quantifier les grandes incertitudes exhibées par les tissus mous. Deux aspects sont particulièrement mis en exergue. Le premier point a trait à la prise en compte des incertitudes en mécanique non linéaire, et leurs incidences sur les prédictions des

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22

Bosman, Julien. "Physically-based 6-DoF nodes deformable models : application to connective tissues simulation and soft-robots control." Thesis, Lille 1, 2015. http://www.theses.fr/2015LIL10122/document.

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La simulation médicale est un domaine de recherche de plus en plus actif. Malgré les avancées observées ces dernières années, le modèle complet du patient virtuel reste un objectif ambitieux. Il existe encore de nombreuses opportunités de recherche, notamment concernant la modélisation mécanique des conditions aux limites. Jusqu'à présent, la majorité des travaux était consacrée à la simulation d'organes, ces derniers étant généralement simulés seuls. Cette situation pose problème car l'influence des organes environnants sur les conditions aux limites est négligée. Ces interactions peuvent êtr

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23

Caforio, Federica. "Mathematical modelling and numerical simulation of elastic wave propagation in soft tissues with application to cardiac elastography." Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLX001/document.

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Les objectifs de cette thèse sont la modélisation mathématique et la simulation numérique de l’élastographie impulsionnelle basée sur la force de radiation acoustique (FRA) dans un tissu mou précontraint, et en particulier le myocarde. La première partie du manuscript concerne la modélisation mathématique de la FRA, la propagation d’ondes de cisaillement qui en résulte et la caractérisation de la vitesse des ondes de cisaillement pour une loi de comportement générale du tissu myocardique. Nous montrons aussi des applications pour l’estimation de l’orientation des fibres cardiaques dans le myoc

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24

Dziubla, Thomas D. Lowman Anthony M. "Macroporous hydrogels as vascularizable soft tissue-implant interfaces : materials characterization, in vitro evaluation, computer simulations, and applications in implantable drug delivery devices /." Philadelphia : Drexel University, 2002. http://dspace.library.drexel.edu/handle/1721.1/36.

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25

Boubaker, Mohamed Bader. "Contribution mécanique à la réduction des marges en radiothérapie de la prostate : modélisation et simulation numérique du mouvement et de la déformation des organes pelviens." Thesis, Vandoeuvre-les-Nancy, INPL, 2009. http://www.theses.fr/2009INPL089N/document.

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La prostate est un organe pelvien qui joue un rôle important dans son environnement anatomique, notamment en assurant la sécrétion d’un liquide essentiel dans la composition du liquide séminal. Le cancer de la prostate représente la première cause mortalité chez l’homme à un âge avancé. Ce travail concerne le développement par la méthode des éléments finis d'un modèle numérique du mouvement des organes pelviens (prostate, vessie, rectum) et de leurs interactions. L’objectif est la réduction des marges d'irradiation du volume cible au cours d'une séance de radiothérapie, afin de ne pas altérer

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26

Oliveira, Ana Cláudia Melo Tiessi Gomes de. "Método de deformação elástica para simulação visual e háptica de procedimentos de punção." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/3/3141/tde-29122014-182821/.

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Os simuladores que empregam técnicas de Realidade Virtual são alternativas vantajosas às formas tradicionais de ensino e treinamento médico. Esses simuladores apresentam requisitos específicos, tais como: interação em tempo real e modelos realistas para representar órgãos e tecidos. Além disso, devem possuir comportamentos físicos suficientemente parecidos com os reais e gerar feedbacks dos procedimentos que estejam sendo simulados. Essas características exigem esforços de programação para o desenvolvimento de técnicas de interação e visualização 3D, além de estudos dos tecidos humanos, inclui

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27

Duriez, Christian. "Simulation temps-réel d'interventions médicales impliquant des déformations et des interactions mécaniques entre les tissus et les outils (Manuscrit en anglais)." Habilitation à diriger des recherches, Université des Sciences et Technologie de Lille - Lille I, 2013. http://tel.archives-ouvertes.fr/tel-00785118.

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Les travaux de recherche présentés pour l'habilitation à diriger des recherches, visent à proposer de nouveaux outils pour simuler des interventions médicales et chirurgicales. Ces outils ont plusieurs applications dont l'amélioration de la formation des praticiens, la planification d'interventions pour la préparation et la validation d'une thérapie ou encore l'assistance au geste médical durant une intervention. Or, pour simuler ces interventions de manière réaliste voire prédictive, il faut tenir compte de la déformation des structures anatomiques et des interactions mécaniques entre les out

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Gay, Cyprien. "Adhésifs, mousses, copolymères, granulaires immergés, rides, tissus." Habilitation à diriger des recherches, Université Paris-Diderot - Paris VII, 2013. http://tel.archives-ouvertes.fr/tel-00778225.

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Je suis un physicien, théoricien de la matière molle. Dans des domaines assez variés (polymères, mouillage, adhésifs, mousses), j'ai abordé des problématiques très différentes~: enchevêtrements dynamiques à l'échelle moléculaire, conformation de polymères aux interfaces, interactions visco-élastiques autour d'hétérogénéités (cavitation dans les adhésifs), capillarité, pression osmotique et dilatance dans les mousses liquides, dilatance et mécanismes locaux dans les granulaires mous immergés, formulation tensorielle de la plasticité à partir des grandes déformations élastiques dans les mousses.

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Ballit, Abbass. "Design and manufacturing process optimization for prosthesis of the lower limb." Thesis, Compiègne, 2020. http://www.theses.fr/2020COMP2589.

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Le socket prothétique (dit aussi emboiture prothétique), élément d'interface essentiel entre le moignon du patient et le dispositif prothétique, est le plus souvent le lieu où se définit le degré de réussite prothétique. C'est la partie la plus critique de la prothèse, personnalisée pour s'adapter au membre résiduel unique de l'amputé. Sans une forme et un ajustement approprié du socket, la prothèse devient inconfortable, voire inutilisable, et provoque des douleurs et des problèmes de peau. La production prothétique actuelle manque encore de normes numériques universelles pour concevoir un so

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30

"Interactive soft tissue deformation in surgical simulation." Thesis, 2006. http://library.cuhk.edu.hk/record=b6074299.

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As a good and competent surgical simulator, it should provide surgeons with visual, tactile and behavioral illusion of reality. In literature, methods for object deformation range from non-physically based models to physically based models. Early works of non-physically based models focused on pure geometrical models that were originally employed in computer-aided design. These methods could be used to produce vivid deformable effects in computer animation. However, the soft tissue simulation in surgical applications requires more realistic models based on physical properties of human tissues.

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Tang, W., and Tao Ruan Wan. "Constraint-Based Soft Tissue Simulation for Virtual Surgical Training." 2014. http://hdl.handle.net/10454/11302.

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yes<br>Most of surgical simulators employ a linear elastic model to simulate soft tissue material properties due to its computational efficiency and the simplicity. However, soft tissues often have elaborate nonlinearmaterial characteristics. Most prominently, soft tissues are soft and compliant to small strains, but after initial deformations they are very resistant to further deformations even under large forces. Such material characteristic is referred as the nonlinear material incompliant which is computationally expensive and numerically difficult to simulate. This paper presents

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Liu, Kuan-Chih, and 劉冠志. "Deformation And Cutting Of Soft Tissue With Haptic Rendering In Dental Implant Simulation." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/08233516609672767773.

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碩士<br>國立中正大學<br>機械工程學系暨研究所<br>100<br>The aim of this thesis is to develop a Haptic surgical training system to simulate immediately the deformation and cutting effect of the soft tissue in the oral implant surgery. In this thesis, a local search algorithm is proposed and combined with Virtual Proxy algorithm to achieve continuous collision detection without re-building or modifying hierarchy structure. In this system, a Mass Spring System (MSS) algorithm is used to simulate the realistic deformation of the soft tissue when the cutter collides with the gingival. Moreover, we use a Node Snappin

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Tagliabue, Eleonora. "Patient-specific simulation for autonomous surgery." Doctoral thesis, 2022. http://hdl.handle.net/11562/1061936.

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An Autonomous Robotic Surgical System (ARSS) has to interact with the complex anatomical environment, which is deforming and whose properties are often uncertain. Within this context, an ARSS can benefit from the availability of patient-specific simulation of the anatomy. For example, simulation can provide a safe and controlled environment for the design, test and validation of the autonomous capabilities. Moreover, it can be used to generate large amounts of patient-specific data that can be exploited to learn models and/or tasks. The aim of this Thesis is to investigate the different ways i

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Silva, Liliana Sofia de Aguiar Pereira de. "Biomechanical models of the lower limb and pelvis, for female human gait in regular and overload conditions related to pregnancy." Doctoral thesis, 2014. http://hdl.handle.net/10400.5/8340.

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Doutoramento em Motricidade Humana na especialidade de Biomecânica<br>A gravidez é uma fase especial da vida , considerando as adaptações morfológicas, fisiológicas, biomecânicas e hormonais vivenciadas pelas mulheres durante cerca de 40 semanas e no período pós-parto, podendo modificar o padrão de marcha e contribuir para uma sobrecarga no sistema músculo-esquelético, causando dor nos membros inferiores, bacia e zona lombar. Os objetivos do presente trabalho foram: 1) analisar a marcha de mulheres grávidas no segundo trimestre; 2) comparar as adaptações biomecânicas da marcha, entre as mulher

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Dimaio, Simon P. "Modelling, simulation and planning of needle motion in soft tissues." Thesis, 2003. http://hdl.handle.net/2429/15012.

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Precise needle placement is required for the success of a wide variety of percutaneous interventions in medicine. Insertions into soft tissues can be difficult to learn and to perform, due to tissue deformation, needle deflection and limited visual feedback. Little quantitative information is known about the interaction between needles and soft tissues during puncture, and no effective physically-based training, planning and guidance systems exist for such procedures. This work aims to characterise needle-tissue interaction by measuring contact forces and deformations that are applied du

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"Interactive deformable simulation of soft tissues for virtual surgery applications." 2004. http://library.cuhk.edu.hk/record=b6073625.

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Choi Kup Sze.<br>"June 2004."<br>Thesis (Ph.D.)--Chinese University of Hong Kong, 2004.<br>Includes bibliographical references (p. 122-127).<br>Electronic reproduction. Hong Kong : Chinese University of Hong Kong, [2012] System requirements: Adobe Acrobat Reader. Available via World Wide Web.<br>Electronic reproduction. Ann Arbor, MI : ProQuest Information and Learning Company, [200-] System requirements: Adobe Acrobat Reader. Available via World Wide Web.<br>Mode of access: World Wide Web.<br>Abstracts in English and Chinese.

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Chen, Yu-Ching, and 陳玉菁. "Simulating phosphatic fossilization of the soft tissue with Xenopus laevis oocytes." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/59828022634900614520.

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碩士<br>國立清華大學<br>分子與細胞生物研究所<br>93<br>Paleontologist, geologists and biologists use fossil records to learn about the past history of the earth. Through fossils, we gain the knowledge of the biodiversity and geological processes which still continue today. Fossils from the Precambrian phosphorite rocks of the Doushantuo Formation in Southwest China have an age of ~580 million years ago. Analysis of the preservation of the fossils suggests that creatures were buried alive by catastrophic sediment incursions. Since the preservation of the morphological details of the soft tissues is so well, it tr

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Lewis, Simone. "Low Severity Neck Injury from Side Impact." Thesis, 2018. https://vuir.vu.edu.au/42155/.

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Typically, whiplash (low severity neck injury of for short LSNI) is associated with rear impacts. Due to this, there is a wide body of research investigating the mechanism of LSNI as a result of rear impact. Detailed studies into the prevalence of low severity neck injury show that this injury also occurs in front and side impacts (Stryke et al. 2012, Teamming et al., 1998, Jakobsson 1998, Morris et al., 1996, v Koch et. al. 1995,). This thesis is an investigation into low severity neck injury resulting from side impacts. An initial investigation into the Monash University Accident Research C

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