Dual-source variable pitch spiral CT reconstruction algorithm.
- Author:
Jun ZHAO
1
;
Zungang LIU
;
Yannan JIN
;
Tiange ZHUANG
Author Information
1. Department of Biomedical Engineering, Shanghai Jiaotong University, Shanghai 200240, China. junzhao@sjtu.edu.cn
- Publication Type:Journal Article
- MeSH:
Algorithms;
Coronary Angiography;
methods;
Humans;
Tomography, Spiral Computed;
instrumentation;
methods
- From:
Journal of Biomedical Engineering
2008;25(6):1249-1253
- CountryChina
- Language:Chinese
-
Abstract:
Computed tomography angiography (CTA) is a useful approach for diagnosing vascular diseases. In this paper, we proposed a reconstruction algorithm for dual-source spiral CT with variable pitch. The projection data are collected by the double-source double-multislice spiral CT (DSDMS-CT). However, the pitch of the DSDMS-CT is variable other than being constant. We have developed a new formula performing interpolation along Z-axis for dual-source spiral CT with variable pitch. The dual-source spiral CT with variable pitch can chase contrast bolus more flexibly and more effectively. The simulation results show the correctness and efficiency of the proposed algorithm.
