X-ray tube based on carbon nanotube field emitter for low dose mini c-arm fluoroscopy

Jongmin Lim; Amar P. Gupta; Hangyeol Park; Jinho Choi; Jaeik Jung; Jaekyu Jang; Seung Jun Yeo; Jeung Sun Ahn; Byeong No Lee; Moon Shik Chae; Jehwang Ryu

doi:10.1117/12.2582090

X-ray tube based on carbon nanotube field emitter for low dose mini c-arm fluoroscopy

Jongmin Lim, Amar P. Gupta, Hangyeol Park, Jinho Choi, Jaeik Jung, Jaekyu Jang, Seung Jun Yeo, Jeung Sun Ahn, Byeong No Lee, Moon Shik Chae, Jehwang Ryu

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

2 Citations (Scopus)

Abstract

We designed and developed the vacuum sealed x-ray tube based on carbon nanotube(CNT) field emitter for mobile medical x-ray devices and also design the test bed for CNT x-ray tube. The CNT was synthesized by chemical vapor deposition(CVD) method on a metal alloy substrate. The grown CNT is assembled with a gate and a focuser and then combined into an electron gun(e-gun) through a brazing process. The the e-gun had an aging process inside the vacuum chamber. As a result of aging, the CNT e-gun was able to generate anode current of 1.5 mA at electric field of about 4 V/μm, and field emission current was also stabilized. After the aging process, the e-gun was brazed into a ceramic X-ray tube inside a high-temperature furnace at a vacuum degree of E-06 torr and vacuum sealed. Field emission characteristic was measured using this X-ray tube and compared with an e-gun, and almost similar results were obtained. Incase of Xray tube, we applied a higher electric field while controlling the current at 500ms intervals through pulse driving. As a result, X-ray images of human teeth were successfully acquired using CNT X-ray tubes.

Original language	English
Title of host publication	Medical Imaging 2021
Subtitle of host publication	Physics of Medical Imaging
Editors	Hilde Bosmans, Wei Zhao, Lifeng Yu
Publisher	SPIE
ISBN (Electronic)	9781510640191
DOIs	https://doi.org/10.1117/12.2582090
Publication status	Published - 2021
Event	Medical Imaging 2021: Physics of Medical Imaging - Virtual, Online, United States Duration: 15 Feb 2021 → 19 Feb 2021

Publication series

Name	Progress in Biomedical Optics and Imaging - Proceedings of SPIE
Volume	11595
ISSN (Print)	1605-7422

Conference

Conference	Medical Imaging 2021: Physics of Medical Imaging
Country/Territory	United States
City	Virtual, Online
Period	15/02/21 → 19/02/21

Bibliographical note

Publisher Copyright:
© COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.

Keywords

Carbon nanotube
Field emission
Mini c-arm fluoroscopy
X-ray tube

Access to Document

10.1117/12.2582090

Cite this

Lim, J., Gupta, A. P., Park, H., Choi, J., Jung, J., Jang, J., Yeo, S. J., Ahn, J. S., Lee, B. N., Chae, M. S., & Ryu, J. (2021). X-ray tube based on carbon nanotube field emitter for low dose mini c-arm fluoroscopy. In H. Bosmans, W. Zhao, & L. Yu (Eds.), Medical Imaging 2021: Physics of Medical Imaging Article 1159539 (Progress in Biomedical Optics and Imaging - Proceedings of SPIE; Vol. 11595). SPIE. https://doi.org/10.1117/12.2582090

@inproceedings{1b043b1a0e5e4f4f8eeba51fd8c5741d,

title = "X-ray tube based on carbon nanotube field emitter for low dose mini c-arm fluoroscopy",

abstract = "We designed and developed the vacuum sealed x-ray tube based on carbon nanotube(CNT) field emitter for mobile medical x-ray devices and also design the test bed for CNT x-ray tube. The CNT was synthesized by chemical vapor deposition(CVD) method on a metal alloy substrate. The grown CNT is assembled with a gate and a focuser and then combined into an electron gun(e-gun) through a brazing process. The the e-gun had an aging process inside the vacuum chamber. As a result of aging, the CNT e-gun was able to generate anode current of 1.5 mA at electric field of about 4 V/μm, and field emission current was also stabilized. After the aging process, the e-gun was brazed into a ceramic X-ray tube inside a high-temperature furnace at a vacuum degree of E-06 torr and vacuum sealed. Field emission characteristic was measured using this X-ray tube and compared with an e-gun, and almost similar results were obtained. Incase of Xray tube, we applied a higher electric field while controlling the current at 500ms intervals through pulse driving. As a result, X-ray images of human teeth were successfully acquired using CNT X-ray tubes.",

keywords = "Carbon nanotube, Field emission, Mini c-arm fluoroscopy, X-ray tube",

author = "Jongmin Lim and Gupta, {Amar P.} and Hangyeol Park and Jinho Choi and Jaeik Jung and Jaekyu Jang and Yeo, {Seung Jun} and Ahn, {Jeung Sun} and Lee, {Byeong No} and Chae, {Moon Shik} and Jehwang Ryu",

note = "Publisher Copyright: {\textcopyright} COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.; Medical Imaging 2021: Physics of Medical Imaging ; Conference date: 15-02-2021 Through 19-02-2021",

year = "2021",

doi = "10.1117/12.2582090",

language = "English",

series = "Progress in Biomedical Optics and Imaging - Proceedings of SPIE",

publisher = "SPIE",

editor = "Hilde Bosmans and Wei Zhao and Lifeng Yu",

booktitle = "Medical Imaging 2021",

address = "United States",

}

Lim, J, Gupta, AP, Park, H, Choi, J, Jung, J, Jang, J, Yeo, SJ, Ahn, JS, Lee, BN, Chae, MS & Ryu, J 2021, X-ray tube based on carbon nanotube field emitter for low dose mini c-arm fluoroscopy. in H Bosmans, W Zhao & L Yu (eds), Medical Imaging 2021: Physics of Medical Imaging., 1159539, Progress in Biomedical Optics and Imaging - Proceedings of SPIE, vol. 11595, SPIE, Medical Imaging 2021: Physics of Medical Imaging, Virtual, Online, United States, 15/02/21. https://doi.org/10.1117/12.2582090

X-ray tube based on carbon nanotube field emitter for low dose mini c-arm fluoroscopy. / Lim, Jongmin; Gupta, Amar P.; Park, Hangyeol et al.
Medical Imaging 2021: Physics of Medical Imaging. ed. / Hilde Bosmans; Wei Zhao; Lifeng Yu. SPIE, 2021. 1159539 (Progress in Biomedical Optics and Imaging - Proceedings of SPIE; Vol. 11595).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - X-ray tube based on carbon nanotube field emitter for low dose mini c-arm fluoroscopy

AU - Lim, Jongmin

AU - Gupta, Amar P.

AU - Park, Hangyeol

AU - Choi, Jinho

AU - Jung, Jaeik

AU - Jang, Jaekyu

AU - Yeo, Seung Jun

AU - Ahn, Jeung Sun

AU - Lee, Byeong No

AU - Chae, Moon Shik

AU - Ryu, Jehwang

PY - 2021

Y1 - 2021

N2 - We designed and developed the vacuum sealed x-ray tube based on carbon nanotube(CNT) field emitter for mobile medical x-ray devices and also design the test bed for CNT x-ray tube. The CNT was synthesized by chemical vapor deposition(CVD) method on a metal alloy substrate. The grown CNT is assembled with a gate and a focuser and then combined into an electron gun(e-gun) through a brazing process. The the e-gun had an aging process inside the vacuum chamber. As a result of aging, the CNT e-gun was able to generate anode current of 1.5 mA at electric field of about 4 V/μm, and field emission current was also stabilized. After the aging process, the e-gun was brazed into a ceramic X-ray tube inside a high-temperature furnace at a vacuum degree of E-06 torr and vacuum sealed. Field emission characteristic was measured using this X-ray tube and compared with an e-gun, and almost similar results were obtained. Incase of Xray tube, we applied a higher electric field while controlling the current at 500ms intervals through pulse driving. As a result, X-ray images of human teeth were successfully acquired using CNT X-ray tubes.

AB - We designed and developed the vacuum sealed x-ray tube based on carbon nanotube(CNT) field emitter for mobile medical x-ray devices and also design the test bed for CNT x-ray tube. The CNT was synthesized by chemical vapor deposition(CVD) method on a metal alloy substrate. The grown CNT is assembled with a gate and a focuser and then combined into an electron gun(e-gun) through a brazing process. The the e-gun had an aging process inside the vacuum chamber. As a result of aging, the CNT e-gun was able to generate anode current of 1.5 mA at electric field of about 4 V/μm, and field emission current was also stabilized. After the aging process, the e-gun was brazed into a ceramic X-ray tube inside a high-temperature furnace at a vacuum degree of E-06 torr and vacuum sealed. Field emission characteristic was measured using this X-ray tube and compared with an e-gun, and almost similar results were obtained. Incase of Xray tube, we applied a higher electric field while controlling the current at 500ms intervals through pulse driving. As a result, X-ray images of human teeth were successfully acquired using CNT X-ray tubes.

KW - Carbon nanotube

KW - Field emission

KW - Mini c-arm fluoroscopy

KW - X-ray tube

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U2 - 10.1117/12.2582090

DO - 10.1117/12.2582090

M3 - Conference contribution

AN - SCOPUS:85103685449

T3 - Progress in Biomedical Optics and Imaging - Proceedings of SPIE

BT - Medical Imaging 2021

A2 - Bosmans, Hilde

A2 - Zhao, Wei

A2 - Yu, Lifeng

PB - SPIE

T2 - Medical Imaging 2021: Physics of Medical Imaging

Y2 - 15 February 2021 through 19 February 2021

ER -

X-ray tube based on carbon nanotube field emitter for low dose mini c-arm fluoroscopy

Abstract

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Bibliographical note

Keywords

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