摘要 |
In energy subtraction processing, grid information representing grid use conditions at the time of imaging operations for a plurality of radiation images of an object is acquired. Weight factors are adjusted in accordance with the grid information, which has been acquired. A weighted addition or subtraction process is performed on corresponding pixels in the plurality of the radiation images of the object by use of the weight factors, which have thus been adjusted. A constituent image representing a predetermined constituent in the object is thus formed.
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