| 摘要 |
PURPOSE:To sense an image having higher image quality at a higher speed as compared with a case performing scanning by one kind of X-rays, by a method wherein a spectral crystal is curved to obtain two or more kinds of X-rays and the different positions of an object are scanned by said X-rays to operate respective image data obtained. CONSTITUTION:X-rays 21 is allowed to be incident to a spectroscope 22 made of a curved spectral crystal to be spectrally diffracted into two or more kinds of monochromatic X-rays 23 which is narrow in a vertical direction and long in a horizontal direction. Said monochromatic X-rays 23 are separated into high energy monochromatic X-rays 25 and low energy monochromatic X-rays 26. Two kinds of monochromatic X-rays 25, 26 are allowed to irradiate the different positions of an object 5 and the X-ray image data of the respective irradiation regions are detected by a detector 6. At this time, the energy of the high energy monochromatic X-rays 25 is set so as to be higher than the absorption end of a contrast agent element and that of the low energy monochromatic X-rays 26 is set so as to be lower than said absorption end to pick up an X-ray image which is, in turn, operationally processed to enhance the contrast of the image. Since the object is simultaneously sensed by two or more kinds of monochromatic X-rays, the image can be picked up within a short time and the contrast thereof can be enhanced. |
