Patent ID: 7957502

Claim:
A method for scaling a scattered ray intensity distribution in a multi bulbs X-ray CT apparatus configured to irradiate a subject with X-rays from a plurality of X-ray generation sections, respectively and configure a cross-sectional image of the subject by detecting the X-rays passing through the subject, the method comprising: a first difference being achieved, the first difference being the difference between a real data of a first X-ray intensity achieved by passing of X-rays through the subject, the X-rays being radiated from the plurality of the X-ray generation sections, respectively and an opposed data of a second X-ray intensity achieved by passing of these X-rays through a same position of the subject in an opposite direction, a second difference between scattered ray intensity included in the real data and scattered ray intensity included in the opposed data being achieved, including: estimating a first primary scattered ray included in the real data of the first X-ray intensity achieved by passing of the X-rays through the subject, the X-rays being radiated from the plurality of the X-ray generation sections, respectively; estimating a second primary scattered ray included in the opposed data of the second X-ray intensity achieved by passing of the X-rays through the subject at the same position in an opposite direction, respectively; and performing scaling of an estimated primary scattered ray intensity distribution on the basis of a ratio between the first difference and the second difference.