13 March 2009 Interactive GPU-accelerated image reconstruction in cone-beam CT
Author Affiliations +
Proceedings Volume 7258, Medical Imaging 2009: Physics of Medical Imaging; 72582A (2009) https://doi.org/10.1117/12.812213
Event: SPIE Medical Imaging, 2009, Lake Buena Vista (Orlando Area), Florida, United States
We offer a novel approach for real-time CT reconstruction with the possibility of interactively changing parameters like the position and orientation of the slice to arbitrary values by the user during the analysis. To achieve this, a new reconstruction, including backprojection, is done every time the user wants to see a different view (in contrast to computing a volume upfront). The reconstruction was implemented on a GPU (graphics processing unit) using OpenGL and provides near real-time performance with less than 20 ms reconstruction time for 512 × 512 images. With this approach the user is free to change parameters that are fixed when a conventional reconstruction is used. So he is free to set the position of the slice, its orientation and the voxel size to arbitrary values, or to select a different set of projections for a cardiac reconstruction. Thus the waiting time for the volume reconstruction is removed. Therefore our method is esp. promising for applications such as intra-operative CT and interventional CT.
© (2009) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Lars Hillebrand, Lars Hillebrand, Robert M. Lapp, Robert M. Lapp, Yiannis Kyriakou, Yiannis Kyriakou, Willi A. Kalender, Willi A. Kalender, } "Interactive GPU-accelerated image reconstruction in cone-beam CT", Proc. SPIE 7258, Medical Imaging 2009: Physics of Medical Imaging, 72582A (13 March 2009); doi: 10.1117/12.812213; https://doi.org/10.1117/12.812213

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