Enhanced magnification angiography including phase-contrast effect using a 100-µm focus x-ray tube

Eiichi Sato; Etsuro Tanaka; Hidezo Mori; Hiroki Kawakami; Toshiaki Kawai; Takashi Inoue; Akira Ogawa; Shigehiro Sato; Toshio Ichimaru; Kazuyoshi Takayama; Hideaki Ido

doi:10.1117/12.620205

10 September 2005 Enhanced magnification angiography including phase-contrast effect using a 100-μm focus x-ray tube

Eiichi Sato, Etsuro Tanaka, Hidezo Mori, Hiroki Kawakami, Toshiaki Kawai, Takashi Inoue, Akira Ogawa, Shigehiro Sato, Toshio Ichimaru, Kazuyoshi Takayama, Hideaki Ido

Author Affiliations +

Proceedings Volume 5918, Laser-Generated, Synchrotron, and Other Laboratory X-Ray and EUV Sources, Optics, and Applications II; 591811 (2005) https://doi.org/10.1117/12.620205
Event: Optics and Photonics 2005, 2005, 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-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 38 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. Magnification angiography including phase-contrast effect was performed by three-time magnification imaging with a computed radiography system using 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, Hiroki Kawakami, Toshiaki Kawai, Takashi Inoue, Akira Ogawa, Shigehiro Sato, Toshio Ichimaru, Kazuyoshi Takayama, and Hideaki Ido "Enhanced magnification angiography including phase-contrast effect using a 100-μm focus x-ray tube", Proc. SPIE 5918, Laser-Generated, Synchrotron, and Other Laboratory X-Ray and EUV Sources, Optics, and Applications II, 591811 (10 September 2005); https://doi.org/10.1117/12.620205

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