| 摘要 |
PROBLEM TO BE SOLVED: To match the edge part projection line of a filter with the boundary of detector groups when data are collected by making the quality of radiation made incident on each detector group of a multi-detector different by the filter. SOLUTION: An X-ray photographing device is provided with: a multi-detector 24 having a shape curved concavely when it is viewed from the side of an X-ray tube 21 in a channel direction; and a filter 27 for making the quality of the radiation made incident on the detector groups G1, G2 and G3 of the multi-detector 24 be different. The edge part f2 of the filter 27 corresponding to the boundary RB of the detector groups with each other has a shape curved concavely when it is viewed from the side of the X-ray tube 21 in the channel direction similarly to the curve shape of the multi-detector 24. Thus, the edge part projection line F2 of the filter 27 becomes linear, and the edge part projection line F2 of the filter 27 matches the boundary RB regardless of the position of the boundary RB. COPYRIGHT: (C)2005,JPO&NCIPI
|
