| 摘要 |
PROBLEM TO BE SOLVED: To accurately provide images by dual energy imaging of switching the tube voltage of an X-ray tube at a high speed by a view unit with high image quality. SOLUTION: Correction object data PL(is, vc)-PL(ie, vc) for which the detection signal strength of original transmission X-rays is equal to or below a threshold in projection by a low tube voltage are corrected on the basis of corresponding data PH(is, vr)-PH(ie, vr) in the projection by a high tube voltage for which the view is the view vr close to the view vc of the correction object data and the close data. For instance, the correction object data are replaced with the data composed by multiplying the ratio K of the representative value avePH of the data close to the correction object data to the representative value avePL of the data close to the corresponding data with the corresponding data. COPYRIGHT: (C)2010,JPO&INPIT
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