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Proceedings Paper

Micro computed tomography system based on field emission x-ray source with carbon nanotube emitter
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Paper Abstract

The properties of carbon nanotubes (CNTs) show a variety of application possibilities in the next generation industries. Among them, application to a field emission device is expected due to a high emission current at a low critical electric field. Compared with conventional thermionic emission X-ray sources, field emission X-ray sources have many advantages. Their electric field can be turned on and off quickly, minimizing radiation exposure times. Additionally, the size of the imaging system can be reduced because no cooling device is required. Using these advantages, we created a micro computed tomography (CT) system based on a CNT field emission X-ray source. The main advantages of the micro- CT lie in the high-spatial resolution, sensitivity to skeletons and lungs, and low cost. We optimized the field emission characteristics of the CNTs and the system geometry for high resolution.

Paper Details

Date Published: 16 March 2020
PDF: 7 pages
Proc. SPIE 11312, Medical Imaging 2020: Physics of Medical Imaging, 113122V (16 March 2020); doi: 10.1117/12.2549867
Show Author Affiliations
Wooseob Kim, Kyung Hee Univ. (Korea, Republic of)
Amar Prasad Gupta, Kyung Hee Univ. (Korea, Republic of)
Jaekyu Jang, CAT Beam Tech Co., Ltd. (Korea, Republic of)
Jaeik Jung, CAT Beam Tech Co., Ltd. (Korea, Republic of)
Jehwang Ryu, Kyung Hee Univ. (Korea, Republic of)


Published in SPIE Proceedings Vol. 11312:
Medical Imaging 2020: Physics of Medical Imaging
Guang-Hong Chen; Hilde Bosmans, Editor(s)

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