| 摘要 |
A plurality of radiation image signals, which represent radiation images of an object, are obtained by irradiating radiation from different directions to the object and detecting the radiation carrying image information of the object via a scattered radiation removing device for removing radiation having been scattered by the object. Image signal components representing a pattern of the scattered radiation removing device, which are contained in the radiation image signals, are reduced, and pattern-reduced radiation image signals, in which the image signal components representing the pattern of the scattered radiation removing device have been reduced, are thereby obtained. At least either one of a volume signal and a tomographic image signal representing an image of the object is then obtained from the pattern-reduced radiation image signals.
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