| 摘要 |
PROBLEM TO BE SOLVED: To reduce the exposure dose of a subject when generating energy subtraction radiation images by three times or more continuous exposures of radiation. SOLUTION: When an X-ray generator 1 acquires N pieces of radiation images by radiation of N patterns with different energy distributions by the control of an imaging control device 4, the radiation of the N patterns is sequentially and continuously exposed to the subject so that the radiation dose of an optional single exposure out of N times of exposures of radiation is more than the radiation dose in the other (N-1) times of exposure. COPYRIGHT: (C)2009,JPO&INPIT
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