Method and apparatus for examining a subject

摘要: In the X-ray CT system, detectors vary in output characteristics such as linearity, directivity and radiation quality from one detector to another. To make compensations for irregularities, a plurality of phantoms different absorption is prepared system according present invention. Namely, this set by measuring space same manner examination an examinee or subject be examined; coefficient determined each these phantoms. Further, theoretical values phantom are compared actual measurements on provide error value at differing levels. The used pick two closest value. interpolated extrapolated find correcting above method steps advantageously implemented more digital computers. corrected provided conventional image reconstruction device desired video image.