التفاصيل البيبلوغرافية
| العنوان: |
Real time K-edge subtraction x-ray imaging. |
| المؤلفون: |
Fukagawa, Hiroshi, Noda, Chosaku, Suzuki, Yoichi, Hasegawa, Shin, Ando, Masami, Hyodo, Kazuyuki, Nishimura, Katsuyuki, Akisada, Masayoshi, Takenaka, Eiichi, Hosaka, Ryosuke, Toyofuku, Fukae |
| المصدر: |
Review of Scientific Instruments; Jul1989, Vol. 60 Issue 7, p2268, 4p |
| مصطلحات موضوعية: |
ANGIOGRAPHY, SCREEN-film radiography, SYNCHROTRON radiation |
| مستخلص: |
This paper describes an x-ray K-edge subtraction television system for noninvasive angiography utilizing synchrotron radiation. The phantom, including contrast material (iodine), is irradiated by monochromatized dual-energy x-ray flux, alternately, using a high speed monochromator. The monochromator consists of a silicon crystal plate vibrating at 15 Hz so that the phantom is irradiated by the x-ray flux of 150 eV above and below the K-edge photon energy of iodine, 15 times per second. As an x-ray detector, TV cameras optically coupled to an x-ray image intensifier are used and the video signal is processed to display the subtraction image of pairs of successive images in real time. This system was fully implemented and moving phantoms were examined. Both the time interval between the energy change and the exposure time of each image has been shortened to 2 ms. [ABSTRACT FROM AUTHOR] |
|
Copyright of Review of Scientific Instruments is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) |
| قاعدة البيانات: |
Complementary Index |