International Society for Industrial Process Tomography

Preliminary Study of Dynamic Computed Tomography Based on Distributed X-ray Source

Yongshun Xiao^1,2, Daiwei Yu^1,2, Qinhan Hou^1,2, Zhiqiang Chen^1,2*

¹ Department of Engineering Physics, Tsinghua University, Beijing, 100084, China

² Key Laboratory of Particle & Radiation Imaging (Tsinghua University), Ministry of Education, China

^*Email: czq@mail.tsinghua.edu.cn

ABSTRACT

The distributed X-ray source is a novel multi-beam source, which consists of carbon nanotube cathode X-ray generator units. It provides the advantages of compact structure, impulse response and programmable control over conventional X-ray tube. In our research, we replace traditional X-ray source in dynamic computed tomography with linear multi-focus distributed X-ray source which consists of hundreds individual X-ray generators based on carbon nanotubes(CNTs) cathode emitters. In this paper, numerical simulation and iterative algorithms were studied to solve the distributed X-ray source dynamic CT image reconstruction problem. A distributed X-ray source dynamic CT experiment system was constructed for preliminary experiments of detection ability in dynamic imaging.

Keywords ART-TV, Dynamic CT, Distributed X-ray Source, Progress CT

Industrial Application General