重庆理工大学学报（自然科学版）2013，Vol.27Issue(7)：45-49,60,6.DOI:10.3969/j.issn.1674-8425(z).2013.07.010
窄角扇束扫描方式下的并行迭代图像重建算法
An Efficient Iterative and Parallel Image Reconstruction Algorithm with the Narrow Fan-beam Scanning Data
摘要
Abstract
This paper discusses in detail an efficient iterative and parallel image reconstruction algorithm with the narrow fan-beam scanning data.To take advantage of the easy-implemented reconstruction algorithm for parallel-beam projection,the paper proposes a scheme to convert data collected in the narrow fan-beam projection to parallel-beam structure.Iterative reconstruction method is an important alternative in the image reconstruction algorithms,but slow reconstruction speed restricts its practice application.Considering this,this paper proposes parallel reconstruction algorithm with decomposing task.By decomposing reconstruction task in each projection angle,and reconstructing each task synchronously on multiprocessor,the single iterative time can be reduced.Experiment result can prove the parallel reconstruction algorithm not only improves successfully the reconstruction efficiency,but also does not depress image quality in comparison with the tradition iterative algorithm.关键词
窄角扇束扫描/平行束投影/迭代算法/并行图像重建/重建速度Key words
narrow fan-beam scanning/parallel-beam projection/iterative algorithm/parallel image reconstruction/reconstruction velocity分类
计算机与自动化引用本文复制引用
王培容,黄丽雯..窄角扇束扫描方式下的并行迭代图像重建算法[J].重庆理工大学学报（自然科学版）,2013,27(7):45-49,60,6.基金项目
重庆市自然科学基金资助项目(CSTC2010BB2311) （CSTC2010BB2311）
