Title :
FPGA-acceleration of cone-beam reconstruction for the X-ray CT
Author :
Stsepankou, D. ; Kornmesser, K. ; Hesser, J. ; Manner, R.
Author_Institution :
Inst. for Computational Medicine, Universities Mannheim & Heidelberg, Germany
Abstract :
3D interactive technologies become more and more applicable in nowadays medicine. Fast 3D reconstruction of CT-data is one of the examples. We present an acceleration of relevant reconstruction algorithms using FPGAs. For this purpose we used a board based on Xilinx Virtex II6000. Our system is able to reconstruct a 2563 voxel volume from 120 projections (5122j in 9s, using the filtered backprojection algorithm. In addition, it is shown how such a system is used to accelerate iterative algorithms, whereby the forward projection is performed by graphics hardware. The performance for iterative approaches is 4 min for SIRT (10 iterations) and 3 minutes for OS-EM (6 iterations) where the main limitation is the forward projection.
Keywords :
computerised tomography; field programmable gate arrays; image reconstruction; stereo image processing; 3D interactive technologies; 3D reconstruction; CT-data; FPGA-acceleration; OS-EM; SIRT; X-ray CT; Xilinx Virtex II6000; cone-beam reconstruction; filtered backprojection algorithm; forward projection; graphics hardware; iterative algorithms; medicine; Acceleration; Biomedical imaging; Computed tomography; Field programmable gate arrays; Filtering; Graphics; Hardware; Image reconstruction; Iterative algorithms; Iterative methods;
Conference_Titel :
Field-Programmable Technology, 2004. Proceedings. 2004 IEEE International Conference on
Print_ISBN :
0-7803-8651-5
DOI :
10.1109/FPT.2004.1393291
