Detecting the aforementioned x-ray which respectively from scaling manner and the poly bulb x-ray CT device null multiple x-ray generation

摘要

PROBLEM TO BE SOLVED: To provide a method for scaling the intensity distribution of a scattered radiation component, based on a detector signal in a multi-tube type X-ray CT apparatus, and also to provide the multi-tube type X-ray CT apparatus.;SOLUTION: A first difference is obtained, that is the difference between actual data of X-ray intensity obtained by allowing X-rays respectively radiated from a plurality of X-ray generating parts to transmit a subject and opposite data of the X-ray intensity obtained by allowing the X-rays to transmit the same position of the subject in the opposite direction. A primary scattered radiation included in the actual data is estimated. A primary scattered radiation is estimated, which is included in the opposite data obtained by allowing the X-rays to respectively transmit the same position of the subject in the opposite direction. Then, a second difference is obtained, that is the difference between the scattered radiation intensity included in the actual data and the scattered radiation intensity included in the opposite data. An estimated primary scattered radiation intensity distribution is scaled based on a ratio between the first difference and the second difference.;COPYRIGHT: (C)2009,JPO&INPIT