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Erschienen in:
2015 | OriginalPaper | Buchkapitel
Real-Time Resampling of Medical Images Based on Deformed Tetrahedral Structures for Needle Insertion VR-Simulation
verfasst von : Martin Meike, Dirk Fortmeier, Andre Mastmeyer, Heinz Handels
Erschienen in: Bildverarbeitung für die Medizin 2015
Verlag: Springer Berlin Heidelberg
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To provide real-time visualization of deformed volumetric image data for virtual surgery simulation, a resampling algorithm based on deformed tetrahedral structures has been developed. Deformations of the tetrahedral mesh are computed by a soft-tissue simulation. The major advantage of this approach is the possibility to use the resampled image data in different rendering methods such as ray casting, simulated ultrasound or simulated X-ray imaging. To achieve real-time capability, the algorithm was parallelized on the GPU using Nvidia Cuda. Performance measurements have been done on different mesh resolutions. For a subset of 1688 tetrahedrons, short resamplings times of around 2.3 ms are measured on an Nvidia GTX 680, endorsing the algorithm for real-time application.