Abstract：To improve the reconstruction speed of the FDK algorithm, this paper presented a fast algorithm based on the graphics processing unit (GPU). The method acquired higher computational efficiency through more careful optimization techniques, including reasonable mode of thread assigning, collecting and pre-computing the variables which were irrelevant with the voxel and the decreasing of number of global memory accesses. The simulation results show that while the fully optimized algorithm makes no precision reduction, the reconstruction time for 2563 is only 0.5 seconds and for 5123 is only 2.5 seconds, which is a big advance in comparison with the latest research findings.
韩玉 闫镔 宇超群 李磊 李建新. 锥束CT FDK重建算法的GPU并行实现[J]. 计算机应用, 2012, 32(05): 1407-1410.
HAN Yu YAN Bin YU Chao-qun LI Lei LI Jian-xin. GPU-based parallel implementation of FDK algorithm for cone-beam CT. Journal of Computer Applications, 2012, 32(05): 1407-1410.
2012, Vol. 32 
