Dual-source variable pitch spiral CT reconstruction algorithm
Zhao, J.; Liu, Z.; Jin, Y.; Zhuang, T.
Sheng Wu Yi Xue Gong Cheng Xue Za Zhi 25(6): 1249-1253
2008
ISSN/ISBN: 1001-5515 PMID: 19166186 Document Number: 615207
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.