Radiographic imaging with a linear x-ray source and multi-row detector

Qinghao Chen; Shuang Zhou; Yuewen Tan; Tiezhi Zhang

doi:10.1117/12.2582159

15 February 2021 Radiographic imaging with a linear x-ray source and multi-row detector

Qinghao Chen, Shuang Zhou, Yuewen Tan, Tiezhi Zhang

Author Affiliations +

Proceedings Volume 11595, Medical Imaging 2021: Physics of Medical Imaging; 1159537 (2021) https://doi.org/10.1117/12.2582159
Event: SPIE Medical Imaging, 2021, Online Only

Conference Poster

Abstract

A tetrahedron beam CT (TBCT) benchtop system has been developed with linear array x-ray source with 48 focal spots in 4 mm spacing and a photon counting detector (PCD). The generated x-ray beams are collimated to fan beams by a multi-slot collimator and converge to the 6 mm wide multi-row photon counting detector. Due to its scatter rejection geometry, the scatter-to-primary ratio (SPR) is significantly reduced to 17% for fan beam comparing to 120% for cone beam in presence of a head phantom. We performed both 2D and 3D imaging study with the TBCT system. 2D radiography images have been obtained using shift-and-add method. Both analytical and iterative reconstruction methods were used in 3D image reconstruction. Head phantom and animal cadaver were scanned.

Conference Presentation

Citation Download Citation

Qinghao Chen, Shuang Zhou, Yuewen Tan, and Tiezhi Zhang "Radiographic imaging with a linear x-ray source and multi-row detector", Proc. SPIE 11595, Medical Imaging 2021: Physics of Medical Imaging, 1159537 (15 February 2021); https://doi.org/10.1117/12.2582159

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