| 摘要 |
PROBLEM TO BE SOLVED: To reduce artifacts caused by a subtraction picture due to a problem of precision of a position of a catheterization table and by a motion of the object. SOLUTION: The object wears a supporter having markers 42 at a photographed position of the object, the device photographs a mask image and a live image of the photographed position and a frame memory receives the pictures. An error between the marker position of the mask image and that of the live image is calculated so as to conduct subtraction processing so that the are coincident thereby preventing occurrence of a noise in a subtraction picture caused by a position offset of a catheterization table. |
