title: [Dual-source variable pitch spiral CT reconstruction algorithm].
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.
authors.affiliation: Department of Biomedical Engineering, Shanghai Jiaotong University, Shanghai 200240, China. junzhao@sjtu.edu.cn
authors.forename: Jun
authors.initials: J
authors.lastname: Zhao
authors.forename: Zungang
authors.initials: Z
authors.lastname: Liu
authors.forename: Yannan
authors.initials: Y
authors.lastname: Jin
authors.forename: Tiange
authors.initials: T
authors.lastname: Zhuang
mesh_terms: D000465:Algorithms; D017023:Coronary Angiography / Q000379:methods*; D006801:Humans; D036542:Tomography, Spiral Computed / Q000295:instrumentation / Q000379:methods*