The Optimization of Algorithm for CT Image Reconstruction Using Filtered Back-projection
ZHAN Zhi-gang,FENG Huan-qing(Dept. of Electronic Sci. & Tech., Univ. of Sci. & Tech. of China, Hefei 230026 China)
Filtered back-projection is the most important algorithm for CT image reconstruction. It has the advantages of simple algorithm, higher image resolution, and less time consuming. However, the huge CT data are involved in the projection processing, therefore the time consuming is still a big problem. Based on the characteristic of filtered back-projection algorithm, an optimization algorithm is performed to speed up CT image reconstruction on a personal computer, and the reconstruction speed is raised for 20 times.