A Novel Static CT System: The Design of Triple Planes CT and Its Multi-Energy Simulation Results

Frontiers in Physics

Yidi Yao¹  Liang Li¹  Zhiqiang Chen¹ 

[1] Department of Engineering Physics, Tsinghua University, Beijing, China;Key Laboratory of Particle & Radiation Imaging, Ministry of Education, Beijing, China;

关键词: static CT;    multi-energy imaging;    inverse-geometry;    hybrid reconstruction;    material decomposition;   

DOI  :  10.3389/fphy.2021.632869

来源: Frontiers

【 摘 要 】

In this paper, we propose a novel static CT system: triple planes CT (TPCT) system. Three source-detector planes in different horizontal directions are placed in the system. Line-array carbon nanotube sources with different voltages and sandwich detectors are used. Compared to conventional cone-beam CT and common inverse-geometry CT, the TPCT enables fast scanning and six-energy imaging. 1-D U-Net is applied to correct the severe scatter caused by the special geometry. The limited-view problem is solved by the hybrid reconstruction algorithm. A Monte-Carlo simulation is performed on a thorax phantom. Both the reconstruction results and decomposition results have good image quality and show the feasibility of our proposed TPCT imaging system.

【 授权许可】

CC BY