Sugishita Y, Kakihana M, Ohtsuka S, Takeda T, Anno I, Akisada M, Hyodo K, Ando M
Department of Internal Medicine, University of Tsukuba, Ibaraki, Japan.
Jpn Circ J. 1990 Mar;54(3):339-42. doi: 10.1253/jcj.54.339.
Synchrotron radiation is a broadspectrum intense X-ray beam. Selected X-ray wavelength was obtained by Bragg reflex. That is a monochromatic beam, which has a high spatial resolution, and has a K-edge discontinuity in attenuation coefficient, which, by energy subtraction, contributes to improve time resolution. An attempt to apply this method to intravenous coronary arteriography was performed in 7 anesthetized dogs. The beam was obtained by synchrotron radiation from accumulation ring, was reflected by silicon crystal, and was detected by 7 inch image intensifier system. Two-dimensional real time images were recorded on video tape. Phantom experiment was also performed. In dogs, coronary arteries were clearly distinguished by synchrotron radiation, especially at real time by video system. Phantom experiment suggested that coronary arteries could be visualized even over the visualized left ventricle. In conclusion, synchrotron radiation using two-dimensional real time images is expected to be useful in intravenous coronary arteriography in man.
同步辐射是一种广谱强X射线束。通过布拉格反射获得选定的X射线波长。这是一束单色光，具有高空间分辨率，并且在衰减系数上有K边不连续性，通过能量减法，有助于提高时间分辨率。在7只麻醉犬身上尝试将该方法应用于静脉冠状动脉造影。该光束由同步辐射从储存环获得，经硅晶体反射，并由7英寸图像增强器系统检测。二维实时图像记录在录像带上。还进行了体模实验。在犬中，冠状动脉通过同步辐射能清晰区分，特别是通过视频系统实时区分。体模实验表明，即使在已显影的左心室上方，冠状动脉也能被显影。总之，使用二维实时图像的同步辐射有望用于人体静脉冠状动脉造影。
