| 摘要 |
PROBLEM TO BE SOLVED: To enable the abandonment of the direct measurement of a scattered radiation and the decision of a scattered radiation component during the continuous action of both focus-detector systems. SOLUTION: In a phantom (P) at least a part of which analogizes with an inspected subject, scattered radiation intensity generated in the detector (3) of the one focus-detector system is determined during the operation of the at least one focus (F<SB>B</SB>) of at least one of the other focus-detector systems, these spatial distributions about the two or more rotation angles of the focus-detector system are memorized, the scattered radiation intensity, which is determined from an analogous phantom (P) and originates in at least one of the other focus-detector systems, is subtracted from the measured intensity of the 1st focus-detector system with reference to the spatial direction of the focus-detector system and the radiation observed each time at the time of scanning a target, an absorbance is computed from an intensity value rectified in that way, and a CT image or CT volume data are thereby reconstructed. COPYRIGHT: (C)2007,JPO&INPIT
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