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Proceedings Paper

High-speed dental radiography achieved with a kilohertz-range pulsed x-ray generator
Author(s): Akihito Takabe; Mariko Yamamoto; Kimio Sakamaki; Eiichi Sato; Kei Takahashi; Michiaki Sagae; Teiji Oizumi; Katsuaki Sasaki; Yoshiharu Tamakawa; Toru Yanagisawa
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Paper Abstract

The development of a high-intensity kilohertz-range pulsed x-ray generator and its application to dental radiography are described. The pulsed x-ray generator consisted of the following major components: a constant high-voltage power supply, a high-voltage main condenser, a hot-cathode triode, a DC power supply for the filament (hot cathode), and a grid controller. The main condenser of 0.5 (mu) F - 100 kV in the pulser was charged from 50 to 70 kV by the power supply, and the electric charges in the condenser were discharged to the triode by the grid controller. To be exact, the tube voltage decreased during the discharging for generating pulsed x rays, yet the maximum value was equivalent to the initial charged voltage of the main condenser. The maximum values of the tube current and the repetition rate were about 0.5 A and 30 kHz, respectively. The pulse width of the x rays ranged from approximately 20 to 400 microsecond(s) , and the x-ray intensity with a charged voltage of 70 kV and a total resistance of 5.1 M(Omega) was about 0.83 (mu) C/kg at 1.0 m per pulse. Using this generator, high-speed dental radiography, e.g., delayed radiography and multiple-shot radiography, was performed.

Paper Details

Date Published: 1 September 1995
PDF: 13 pages
Proc. SPIE 2549, Ultrahigh- and High-Speed Photography, Videography, and Photonics '95, (1 September 1995); doi: 10.1117/12.218300
Show Author Affiliations
Akihito Takabe, Iwate Medical Univ. (Japan)
Mariko Yamamoto, Iwate Medical Univ. (Japan)
Kimio Sakamaki, Iwate Medical Univ. (Japan)
Eiichi Sato, Iwate Medical Univ. (Japan)
Kei Takahashi, Iwate Medical Univ. (Japan)
Michiaki Sagae, Iwate Medical Univ. (Japan)
Teiji Oizumi, Iwate Medical Univ. (Japan)
Katsuaki Sasaki, Iwate Medical Univ. (Japan)
Yoshiharu Tamakawa, Iwate Medical Univ. (Japan)
Toru Yanagisawa, Iwate Medical Univ. (Japan)

Published in SPIE Proceedings Vol. 2549:
Ultrahigh- and High-Speed Photography, Videography, and Photonics '95
George A. Kyrala; Donald R. Snyder, Editor(s)

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