摘要
在研究扇形束插值代数重建法基础上 ,提出了由相叠的低分辨扇形束投影数据重建高分辨CT图像的两个新算法 ,即扇形束的虚拟探测器法和扇形束的直接重建法 。
Based on the study of the algebraic reconstruction techniques (ART) and the fan beam interpolative algebraic reconstruction techniques (FIART), two novel algorithms to reconstruct high resolution CT image from overlapped low resolution fan beam projection data are presented. One of the algorithms is called fan beam virtual detector algorithm, and the other is called fan beam direct reconstruction algorithm. Some simulation results are shown and analyzed.
出处
《核技术》
CAS
CSCD
北大核心
2002年第10期805-810,共6页
Nuclear Techniques
基金
国家自然科学基金 (6 99310 10 )
教育部高等学校骨干教师资助计划资助
关键词
CT图像
计算机层析成像
相叠采样
插值代数重建法
低分辨扇形束投影数据
图象处理
图象重建
Computed tomography, Overlapped sampling, Interpolative algebraic reconstruction techniques, Low resolution fan beam projection data, High resolution CT image
