Multisource cone beam computed tomography using a carbon nanotube x-ray source array

Shuang Xu; Yuanming Hu; Boyuan Li; Christina R. Inscoe; Donald A. Tyndall; Yueh Z. Lee; Jianping Lu; Otto Zhou

doi:10.1117/12.3005571

1 April 2024 Multisource cone beam computed tomography using a carbon nanotube x-ray source array

Shuang Xu, Yuanming Hu, Boyuan Li, Christina R. Inscoe, Donald A. Tyndall, Yueh Z. Lee, Jianping Lu, Otto Zhou

Proceedings Volume 12925, Medical Imaging 2024: Physics of Medical Imaging; 129253F (2024) https://doi.org/10.1117/12.3005571
Event: SPIE Medical Imaging, 2024, San Diego, California, United States

Conference Poster

Abstract

The purpose of this study is to develop and evaluate a functional multisource cone beam computed tomography (ms- CBCT) scanner to mitigate some of the main limitations of the current CBCT. The benchtop ms-CBCT utilizes a carbon nanotube (CNT) field emission source array to generate multiple narrowly collimated and rapidly scanning x-ray beams, each illuminating a section of the object and collectively covering the region of interest. A contrast phantom and a Defrise phantom were imaged by the ms-CBCT, the ms-CBCT operating in the conventional CBCT configuration, and a clinical CBCT. The results show the ms-CBCT reduces the spatial nonuniformity and root-mean-square error (RMSE) of the CT HU values by respectively 75% and 60%, essentially eliminates the cone beam artifacts, increases the effective axial coverage, and improves the CNR by 30%~50% compared to the conventional CBCT at a comparable imaging dose. The results show that the ms-CBCT can potentially provides the performance of an MDCT while maintaining the essential attributes of a CBCT including volumetric imaging, low dose, affordability, and compact design.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Shuang Xu, Yuanming Hu, Boyuan Li, Christina R. Inscoe, Donald A. Tyndall, Yueh Z. Lee, Jianping Lu, and Otto Zhou "Multisource cone beam computed tomography using a carbon nanotube x-ray source array", Proc. SPIE 12925, Medical Imaging 2024: Physics of Medical Imaging, 129253F (1 April 2024); https://doi.org/10.1117/12.3005571

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