RADIATION IMAGER AND RADIATION DETECTION SIGNAL PROCESSING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a radiation imager and a radiation detection signal processing method capable of sufficiently removing a time delay of radiation detection signal caused by a radiation detecting means from the radiation detection signal taken out of the radiation detecting means for a precision substraction image.

SOLUTION: When obtaining a subtraction image from a live image and a mask image by subtraction (DSA process), the amount of time delay is removed from each X-ray detection signal by a recursive calculation to acquire a corrected X-ray detection signal, with the amount of time delay contained in the X-ray detection signal considered as of impulse response comprising an exponential function. The live image and the mask image are acquired from the corrected detection signal.

COPYRIGHT: (C)2005,JPO&NCIPI