An exact reconstruction algorithm for triple-source helical cone-beam CT

被引：0
|
作者：
Zhao, Jun [1 ]
Jiang, Ming
Zhuang, Tiange
Wang, Ge
机构：
[1] Shanghai Jiao Tong Univ, Dept Biomed Engn, Shanghai 200030, Peoples R China
[2] Peking Univ, Sch Math Sci, LMAM, Beijing 100871, Peoples R China
[3] Univ Iowa, Dept Radiol, Iowa City, IA 52242 USA
来源：
JOURNAL OF X-RAY SCIENCE AND TECHNOLOGY | 2006年 / 14卷 / 03期
关键词：
computed tomography (CT); cone-beam; triple-sources; helical scanning; filtered-backprojection (FBP); backprojected-filtration (BPF);
D O I：
暂无
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
For dynamic CT reconstruction, we have conceptualized a triple-source helical cone-beam scanning mode, and formulated a backprojected-filtration (BPF) algorithm for exact image reconstruction. The algorithm uses data from the three inter-helix Mares related to the inter-helix PI-lines and the minimum detection windows defined for the triple-source configuration. The proof of the formula is based on Tuy's inversion formula and the geometric relations of inter-helix PI-lines. Simulation results demonstrate the validity of the reconstruction algorithm. The BPF algorithm is also extended for the (2N + 1)-source helical cone-beam CT.
引用
收藏
页码：191 / 206
页数：16
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