High-speed dental radiography achieved with a kilohertz-range pulsed x-ray generator

Akihito Takabe; Mariko Yamamoto; Kimio Sakamaki; Eiichi Sato; Kei Takahashi; Michiaki Sagae; Teiji Oizumi; Katsuaki Sasaki; Yoshiharu Tamakawa; Toru Yanagisawa

doi:10.1117/12.218300

1 September 1995 High-speed dental radiography achieved with a kilohertz-range pulsed x-ray generator

Akihito Takabe, Mariko Yamamoto, Kimio Sakamaki, Eiichi Sato, Kei Takahashi, Michiaki Sagae, Teiji Oizumi, Katsuaki Sasaki, Yoshiharu Tamakawa, Toru Yanagisawa

Author Affiliations +

Proceedings Volume 2549, Ultrahigh- and High-Speed Photography, Videography, and Photonics '95; (1995) https://doi.org/10.1117/12.218300
Event: SPIE's 1995 International Symposium on Optical Science, Engineering, and Instrumentation, 1995, San Diego, CA, United States

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.

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Akihito Takabe, Mariko Yamamoto, Kimio Sakamaki, Eiichi Sato, Kei Takahashi, Michiaki Sagae, Teiji Oizumi, Katsuaki Sasaki, Yoshiharu Tamakawa, and Toru Yanagisawa "High-speed dental radiography achieved with a kilohertz-range pulsed x-ray generator", Proc. SPIE 2549, Ultrahigh- and High-Speed Photography, Videography, and Photonics '95, (1 September 1995); https://doi.org/10.1117/12.218300

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KEYWORDS

X-rays

Radiography

Resistance

Power supplies

Electrodes

Skull

Virtual colonoscopy

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