Development of carbon nanotubes emitter based multi x-ray source array for digital chest tomosynthesis system

Junyoung Park; Amar Prasad Gupta; Kyung-Sik Yoon; Dongkeun Kim; Changwon Jeong; Kwon-Ha Yoon; Seungyong Cho; Jeung Sun Ahn; Seong-Jin Park; Mallory Mativenga; Jehwang Ryu

doi:10.1117/12.2613618

4 April 2022 Development of carbon nanotubes emitter based multi x-ray source array for digital chest tomosynthesis system

Junyoung Park, Amar Prasad Gupta, Kyung-Sik Yoon, Dongkeun Kim, Changwon Jeong, Kwon-Ha Yoon, Seungyong Cho, Jeung Sun Ahn, Seong-Jin Park, Mallory Mativenga, Jehwang Ryu

Author Affiliations +

Proceedings Volume 12031, Medical Imaging 2022: Physics of Medical Imaging; 1203149 (2022) https://doi.org/10.1117/12.2613618
Event: SPIE Medical Imaging, 2022, San Diego, California, United States

Conference Poster

Abstract

We designed an X-ray source using a carbon nanotubes-based electron emitter. Carbon nanotubes (CNTs) having a cylindrical structure have excellent electrical and mechanical properties. For this reason, it is suitable as an electron emitter device of a field emission method and can be used as the X-ray source. CNTs were synthesized on an alloy substrate through chemical vapor deposition (CVD) method, and the substrate was used as a cathode in an electron emitter. The CNT-based emitter consists of a gate and a CNT cathode, and the emitter together with an anode constitutes an X-ray source. To improve the emitter's electron emission characteristics and durability, a MOSFET circuit was added between the CNT cathode and ground to enable pulse driving. In addition, the possibility of using the miniaturized X-ray sources as a multi-X-ray source arrays were confirmed by using the deMUX circuit to switch multiple emitters. The field emission characteristics of the CNT-based X-ray sources were analyzed, and it was confirmed that an X-ray image could be obtained.

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Junyoung Park, Amar Prasad Gupta, Kyung-Sik Yoon, Dongkeun Kim, Changwon Jeong, Kwon-Ha Yoon, Seungyong Cho, Jeung Sun Ahn, Seong-Jin Park, Mallory Mativenga, and Jehwang Ryu "Development of carbon nanotubes emitter based multi x-ray source array for digital chest tomosynthesis system", Proc. SPIE 12031, Medical Imaging 2022: Physics of Medical Imaging, 1203149 (4 April 2022); https://doi.org/10.1117/12.2613618

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