Development of 120 kV CNT-based digital x-ray tube for fluoroscopy

Amar Prasad Gupta; Jaekyu Jang; Keunhwa Park; Hanna Lee; Deokwon Seo; Mrinal Bhusal Sharma; Jaeik Jung; YoungKuk Park; Seung Jun Yeo; Jeung Sun Ahn; Jehwang Ryu

doi:10.1117/12.2613554

4 April 2022 Development of 120 kV CNT-based digital x-ray tube for fluoroscopy

Amar Prasad Gupta, Jaekyu Jang, Keunhwa Park, Hanna Lee, Deokwon Seo, Mrinal Bhusal Sharma, Jaeik Jung, YoungKuk Park, Seung Jun Yeo, Jeung Sun Ahn, Jehwang Ryu

Author Affiliations +

Proceedings Volume 12031, Medical Imaging 2022: Physics of Medical Imaging; 1203147 (2022) https://doi.org/10.1117/12.2613554
Event: SPIE Medical Imaging, 2022, San Diego, California, United States

Conference Poster

Abstract

In fluoroscopy, X-rays are used to obtain the real-time moving images of the human anatomy. To do so, a pulsed fluoroscopy is used so that patient and staffs are exposed to minimum radiation possible. However, in most medium priced pulsed fluoroscopy systems, X-ray tube without grid is used. The grid-less X-ray tube cannot produce perfect digital pulses due to inherent problem associated with thermionic emission of filament. Thus, the patient is exposed to unnecessary radiation using conventional Fluoroscopic system. This problem can be easily solved using carbon nanotube (CNT) based digital X-ray tubes and are much cheaper to manufacture than grid controlled filament based X-ray tubes. In this study, we have developed 120 kV CNT-based digital X-ray tubes for pulsed fluoroscopy that can be operated at very high frequency (~ MHz) producing low radiation dose during X-ray imaging. The DC and pulsed performance of Xray tube is studied, and the X-ray imaging of human skull is done with relatively low X-ray dose by pulsing the X-ray tube at 25 kHz. The commercial high voltage sources, function generator and N type-MOSFET were used for high-speed switching of E-beam during X-ray emission. This paper could help the radiologists and all the medical personnel understand the advantages of CNT based X-ray technology over filament for X-ray imaging use low dose radiation.

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Amar Prasad Gupta, Jaekyu Jang, Keunhwa Park, Hanna Lee, Deokwon Seo, Mrinal Bhusal Sharma, Jaeik Jung, YoungKuk Park, Seung Jun Yeo, Jeung Sun Ahn, and Jehwang Ryu "Development of 120 kV CNT-based digital x-ray tube for fluoroscopy", Proc. SPIE 12031, Medical Imaging 2022: Physics of Medical Imaging, 1203147 (4 April 2022); https://doi.org/10.1117/12.2613554

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