A multigrid tutorial: second edition
A multigrid tutorial: second edition
Fast CSG voxelization by frame buffer pixel mapping
VVS '00 Proceedings of the 2000 IEEE symposium on Volume visualization
A fast depth-buffer-based voxelization algorithm
Journal of Graphics Tools
Acceleration Techniques for GPU-based Volume Rendering
Proceedings of the 14th IEEE Visualization 2003 (VIS'03)
ACM SIGGRAPH 2007 sketches
Single-pass GPU solid voxelization for real-time applications
GI '08 Proceedings of graphics interface 2008
A multigrid framework for real-time simulation of deformable bodies
Computers and Graphics
An efficient multigrid method for the simulation of high-resolution elastic solids
ACM Transactions on Graphics (TOG)
Progressive high-quality response surfaces for visually guided sensitivity analysis
EuroVis '13 Proceedings of the 15th Eurographics Conference on Visualization
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Fast and reliable methods for predicting and monitoring in-vivo bone strength are of great importance for hip joint replacement. To avoid adaptive remodeling with cortical thinning and increased porosity of the bone due to stress shielding, in a preoperative planning process the optimal implant design, size, and position has to be determined. This process involves interactive implant positioning within the bone as well as simulation and visualization of the stress within bone and implant due to exerting forces. In this paper, we present a prototype of such a visual analysis tool, which, to our best knowledge, provides the first computational steering environment for optimal implant selection and positioning. This prototype considers patient-specific biomechanical properties of the bone to select the optimal implant design, size, and position according to the prediction of individual load transfer from the implant to the bone. We have developed a fast and stable multigrid finite-element solver for hexahedral elements, which enables interactive simulation of the stress distribution within the bone and the implant. By utilizing a real-time GPU-method to detect elements that are covered by the moving implant, we can automatically generate computational models from patient-specific CT scans in real-time, and we can instantly feed these models into the simulation process. Hardware-accelerated volume ray-casting, which is extended by a new method to accurately visualize sub-hexahedron implant boundaries, provides a new quality of orthopedic surgery planning.