Department of Physics, Iwate Medical University
Department of Nutritional Science, Faculty of Applied Bio-science, Tokyo University of Agriculture
Department of Cardiac Physiology, National Cardiovascular Center Research Institute
Electron Tube Division #2, Hamamatsu Photonics K. K.
Department of Neurosurgery, School of Medicine, Iwate Medical University
Department of Neurosurgery, School of Medicine, Iwate Medical University
Department of Microbiology, School of Medicine, Iwate Medical University
Department of Microbiology, School of Medicine, Iwate Medical University
Shock Wave Research Center, Institute of Fluid Science, Tohoku University
抄録(英)
The cerium-target x-ray tube is useful in order to perform cone-beam K-edge angiography because K-series characteristic x-rays from the cerium target are absorbed effectively by iodine-based contrast media. The x-ray generator consists of a main controller and a unit with a high-voltage circuit and a fixed anode x-ray tube. The tube is a glass-enclosed diode with a cerium target and a 0.5-mm-thick beryllium window. The maximum tube voltage and current were 70kV and 0.40mA, respectively, and the focal-spot sizes were approximately 1×1mm. Cerium K-series characteristic x-rays were left using a cerium oxide powder filter, and the x-ray intensity was 14.3μGy/s at 1.0m from the source with a tube voltage of 60kV, a current of 0.40mA, and an exposure time of 1.0s. Angiography was performed with a computed radiography system using iodine-based microspheres 15μm in diameter. In angiography of non-living animals, we observed fine blood vessels of approximately 100μm with high contrasts.