| 摘要 |
PROBLEM TO BE SOLVED: To effectively reduce an artifact on an isocenter cross section.SOLUTION: An image processing device reconstitutes a tomographic image of a subject on the basis of a plurality of projection images obtained by detecting radiations radiated from a plurality of different positions. The image processing device reconstitutes a first tomographic image from the plurality of projection images, extracts a fixed pattern generated in the first tomographic image due to a detector of the radiation, and updates the first tomographic image with a value for the intensity of the fixed pattern as a regularization item to form a second tomographic image. The image processing device outputs the second tomographic image obtained with updating as a tomographic image of a subject.SELECTED DRAWING: Figure 2 |
