| 摘要 |
PURPOSE:To make it possible to obtain a tomographic of a subject moving in the axial direction while maintaining the moving state by collecting projection data corresponding to the movement of the subject. CONSTITUTION:An X-ray B emitted radially from an X-ray source 11 toward a subject 10 is detected on a plane intersecting the X-ray B at a right angle substantially, by an X-ray detector 13 disposed oppositely to the X-ray source 11. Besides, the amount of movement of the subject 10 in the axial direction between the X-ray source 11 and the detector 13 is detected by an encoder 21. The X-ray source 11 and the detector 13 are driven to rotate around the subject 10 by a mechanism control element 25, a plurality of two-dimensional projection data obtained therefrom are inputted to data memory 31, and a plurality of specified one-dimensional projection data are extracted from the data. From the extracted data, a tomographic image on a specified tomographic plane is reconstructed by an image reconstructing element (FRU) 35. |
