| 摘要 |
PURPOSE:To obtain a highly accurate CT image by providing moving means for disposing a X-ray source, center of rotation of a specimen and the detecting center of an X-ray detector on the same straight line. CONSTITUTION:This apparatus is provided with the X-ray source 1, an automatic X-axis stage 2 which moves the specimen A in an X-axis direction, the X-ray detector 3 arrayed one-dimensionally with many X-ray detecting elements, collimating plates 4 which have the spacing parallel with a CT tomographic plane and can vary this spacing, an automatic Z-axis stage 5 which adjusts the spacing of the collimating plates 4, and an automatic X-axis stage 6 disposed with the detector 3 and the collimating plate 4. The X-ray projected from the X-ray source 1 transmits the specimen A and arrives at the detector 3 and is macroprojected at the magnification corresponding to the relative positions of the X-ray source 1, the specimen A and the detector 3 at this time. The stages 2, 6, 5 are controlled by a controller 7 and the X-ray source 1, the center of rotation of the specimen A and the detecting center of the detector 3 are placed on the same line by a computer 8 by which the high accurate CT image is obtd. |
