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14 March 2009 Advanced processing for motion-compensated reconstruction in cardiac cone-beam CT
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Proceedings Volume 7258, Medical Imaging 2009: Physics of Medical Imaging; 725833 (2009) https://doi.org/10.1117/12.811086
Event: SPIE Medical Imaging, 2009, Lake Buena Vista (Orlando Area), Florida, United States
Abstract
Cardiac CT image reconstruction suffers from artifacts due to heart motion during acquisition. In order to mitigate these effects, it is common practice to choose a protocol with minimal gating window and fast gantry rotation. In addition, it is possible to estimate heart motion retrospectively and to incorporate the information in a motion-compensated reconstruction (MCR). If shape tracking algorithms are used for generation of the heart motion-vector field (MVF), the number and positions of the motion vectors will not coincide with the number and positions of the voxels in the reconstruction grid. In this case, data interpolation is necessary for MCR algorithms which require one motion vector at each voxel location. This work examines different data interpolation approaches for the MVF interpolation problem and the effects on the MCR results.
© (2009) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Udo van Stevendaal, Peter Forthmann, Thomas Köhler, Jens von Berg, Cristian Lorenz, and Michael Grass "Advanced processing for motion-compensated reconstruction in cardiac cone-beam CT", Proc. SPIE 7258, Medical Imaging 2009: Physics of Medical Imaging, 725833 (14 March 2009); https://doi.org/10.1117/12.811086
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