Demonstration of flash K-edge angiography utilizing gadolinium-based contrast medium

Eiichi Sato; Michiaki Sagae; Haruo Obara; Rudolf Germer; Etsuro Tanaka; Hidezo Mori; Toshiaki Kawai; Toshio Ichimaru; Shigehiro Sato; Hidenori Ojima; Kazuhiro Takayama; Hideaki Ido

doi:10.1117/12.581179

17 March 2005 Demonstration of flash K-edge angiography utilizing gadolinium-based contrast medium

Eiichi Sato, Michiaki Sagae, Haruo Obara, Rudolf Germer, Etsuro Tanaka, Hidezo Mori, Toshiaki Kawai, Toshio Ichimaru, Shigehiro Sato, Hidenori Ojima, Kazuhiro Takayama, Hideaki Ido

Author Affiliations +

Proceedings Volume 5580, 26th International Congress on High-Speed Photography and Photonics; (2005) https://doi.org/10.1117/12.581179
Event: 26th International Congress on High-Speed Photography and Photonics, 2004, Alexandria, Virginia, United States

Abstract

The high-voltage condensers in a polarity-inversion two-stage Marx surge generator are charged from -50 to -70 kV by a power supply, and the electric charges in the condensers are discharged to an x-ray tube after closing gap switches in the surge generator with a trigger device. The x-ray tube is a demountable diode, and the turbomolecular pump evacuates air from the tube with a pressure of approximately 1 mPa. Tungsten characteristic x rays can be produced, since the tube utilizes a disk cathode and a rod target, and bremsstrahlung rays are not emitted in the opposite direction to that of electron acceleration. At a charging voltage of -70 kV, the instantaneous tube voltage and current were 140 kV and 1.0 kA, respectively. The x-ray pulse widths were approximately 90 ns, and the estimated number of K photons was approximately 5×10⁸ photons/cm² per pulse at 0.5 m from the source of 3.0 mm in diameter.

Citation Download Citation

Eiichi Sato, Michiaki Sagae, Haruo Obara, Rudolf Germer, Etsuro Tanaka, Hidezo Mori, Toshiaki Kawai, Toshio Ichimaru, Shigehiro Sato, Hidenori Ojima, Kazuhiro Takayama, and Hideaki Ido "Demonstration of flash K-edge angiography utilizing gadolinium-based contrast medium", Proc. SPIE 5580, 26th International Congress on High-Speed Photography and Photonics, (17 March 2005); https://doi.org/10.1117/12.581179

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