Ramin Mafi
Computer-based surgical simulation and non-rigid medical image registration in image-guided interventions are examples of applications that would benefit from real-time deformation simulation of soft tissues. The physics of deformation for biological soft-tissue is best described by nonlinear continuum mechanics-based models which then can be discretized by the Finite Element Method (FEM) for a numerical solution. […]
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Emil Eriksson
The goal of this project was to evaluate the viability of a mass-spring-damper based model for modeling of biological tissue. A method for automatically generating such a model from data taken from 3D medical imaging equipment including both the generation of point masses and an algorithm for generating the spring-damper links between these points is […]
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Sathish Kottravel
There are two types of structures in human body, solid organs and hollow membrane like organs. Brain, liver and other soft tissues such as tendons, muscles, cartilage etc., are examples of solid organs. Colon and blood vessels are examples of hollow organs. They greatly differ in structure and mechanical behavior. Deformation of these types of […]
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Kirana Kumara P, Ashitava Ghosal
Biomedical engineering solutions like surgical simulators need High Performance Computing (HPC) to achieve real-time performance. Graphics Processing Units (GPUs) offer HPC capabilities at low cost and low power consumption. In this work, it is demonstrated that a liver which is discretized by about 2500 finite element nodes, can be graphically simulated in realtime, by making […]
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Gregory S. Ruthenbeck
Medical simulation has the potential to revolutionise the training of medical practitioners. Advantages include reduced risk to patients, increased access to rare scenarios and virtually unlimited repeatability. However, in order to fulfil its potential, medical simulators require techniques to provide realistic user interaction with the simulated patient. Specifically, compelling real-time simulations that allow the trainee […]
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Takanori Koga, Shota Furukawa, Noriaki Suetake, Eiji Uchino
The general purpose computation technique on Graphics Processing Unit (GPGPU) has got into the limelight recently. The authors have proposed the multiple k-nearest neighbor (MkNN) classifier for the tissue characterization of coronary plaque. Its characterization performance is highly evaluated. The purpose of this paper is to accelerate the speed of MkNN classifier aiming for it […]
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Ryan Biffard, L. Josh Leon
As video cards become faster and more programmable, physical simulations implemented on graphics processors become possible. This paper examines different programmable stages of the nVidia graphics processor (GPLI), and their use to simulate electrical activation of cells in a tissue sample using a cellular automaton model. Comparable tissue simulation programs were written to run on […]
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Eric Acosta, Alan Liu
This paper describes real-time volumetric haptic and visual algorithms developed to simulate burrhole creation for a virtual reality-based craniotomy surgical simulator. A modified Voxmap point-shell algorithm (McNeely et al., 1999), (Renz et al., 2001) is created to simulate haptic interactions between bone cutting tools and voxel-based bone. New surface boundary detection and force feedback calculation […]
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Z. A. Taylor, S. Crozier, S. Ourselin
Reduced order modelling, in which a full system response is projected onto a subspace of lower dimensionality, has been used previously to accelerate finite element solution schemes by reducing the size of the involved linear systems. In the present work we take advantage of a secondary effect of such reduction for explicit analyses, namely that […]
Felix Ritter, Christian Hansen, Volker Dicken, Olaf Konrad, Bernhard Preim, and Heinz-Otto Peitgen
We present real-time vascular visualization methods, which extend on illustrative rendering techniques to particularly accentuate spatial depth and to improve the perceptive separation of important vascular properties such as branching level and supply area. The resulting visualization can and has already been used for direct projection on a patient’s organ in the operation theater where […]
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Jing Qin, Yim-Pan Chui, Wai-Man Pang, Kup-Sze Choi, Pheng-Ann Heng
Orthopedic surgery treats the musculoskeletal system, in which bleeding is common and can be fatal. To help train future surgeons in this complex practice, researchers designed and implemented a serious game for learning orthopedic surgery. The game focuses on teaching trainees blood management skills, which are critical for safe operations. Using state-of-the-art graphics technologies, the […]
Megumi Nakao, Kei Wai Cecilia Hung, Satoshi Yano, Koji Yoshimura, Kotaro Minato
This paper introduces a new design to allow interactive, direct manipulation of volume data on volumetrically rendered images. We present an adaptive volume proxy mesh which serves not to define surfaces, but to encode the geometry and physical state of the volume. This system performs a modeling-free form of direct volume deformation by adaptively constructing […]
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