Enhanced real-time magnification angiography utilizing a 100-µm-focus x-ray generator in conjunction with an image intensifier

Eiichi Sato; Etsuro Tanaka; Hidezo Mori; Toshiaki Kawai; Takashi Inoue; Akira Ogawa; Mitsuru Izumisawa; Kiyomi Takahashi; Shigehiro Sato; Toshio Ichimaru; Kazuyoshi Takayama

doi:10.1117/12.679220

30 August 2006 Enhanced real-time magnification angiography utilizing a 100-μm-focus x-ray generator in conjunction with an image intensifier

Eiichi Sato, Etsuro Tanaka, Hidezo Mori, Toshiaki Kawai, Takashi Inoue, Akira Ogawa, Mitsuru Izumisawa, Kiyomi Takahashi, Shigehiro Sato, Toshio Ichimaru, Kazuyoshi Takayama

Author Affiliations +

Proceedings Volume 6319, Hard X-Ray and Gamma-Ray Detector Physics and Penetrating Radiation Systems VIII; 63190J (2006) https://doi.org/10.1117/12.679220
Event: SPIE Optics + Photonics, 2006, San Diego, California, United States

Abstract

A microfocus x-ray tube is useful in order to perform magnification digital radiography including phase-contrast effect. The 100-µm-focus x-ray generator consists of a main controller for regulating the tube voltage and current and a tube unit, with a high-voltage circuit and a fixed anode x-ray tube. The maximum tube voltage, current, and electric power were 105 kV, 0.5 mA, and 50 W, respectively. Using a 3.0-mm-thick aluminum filter, the x-ray intensity was 26.0 µGy/s at 1.0 m from the source with a tube voltage of 60 kV and a current of 0.50 mA. Because the peak photon energy was approximately 35 keV using the filter with a tube voltage of 60 kV, the bremsstrahlung x-rays were absorbed effectively by iodine-based contrast media with an iodine K-edge of 33.2 keV. Real-time magnification radiography was performed by twofold magnification imaging with an image intensifier camera, and angiography was achieved with iodine-based microspheres 15 µm in diameter. In angiography of non-living animals, we observed fine blood vessels of approximately 100 µm with high contrasts.

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Eiichi Sato, Etsuro Tanaka, Hidezo Mori, Toshiaki Kawai, Takashi Inoue, Akira Ogawa, Mitsuru Izumisawa, Kiyomi Takahashi, Shigehiro Sato, Toshio Ichimaru, and Kazuyoshi Takayama "Enhanced real-time magnification angiography utilizing a 100-μm-focus x-ray generator in conjunction with an image intensifier", Proc. SPIE 6319, Hard X-Ray and Gamma-Ray Detector Physics and Penetrating Radiation Systems VIII, 63190J (30 August 2006); https://doi.org/10.1117/12.679220

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KEYWORDS

X-rays

Angiography

Radiography

Iodine

X-ray imaging

Image intensifiers

Blood vessels

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