Patent ID: 11961165
Assignee: FUJIFILM CORPORATION
Field: Medical technology (Instruments)
Classification: CPC A  G | IPC A  G

Claim 5:
6. A tomographic image generating apparatus comprising at least one processor,
wherein the processor is configured to:
acquire a plurality of projection images corresponding to a plurality of radiation source positions, the plurality of projection images being generated by causing an imaging apparatus to perform tomosynthesis imaging in which a radiation source is moved relative to a detection surface of a radiation detector in order to emit radiation to a subject at the plurality of radiation source positions according to movement of the radiation source;
reconstruct all or a part of the plurality of projection images to generate a tomographic image on each of a plurality of tomographic planes of the subject;
detect at least one feature point from a plurality of the tomographic images; and
derive a positional shift amount between the plurality of projection images based on body movement of the subject with the feature point as a reference on a corresponding tomographic plane corresponding to the tomographic image in which the feature point is detected,
wherein the processor is further configured to reconstruct the plurality of projection images by correcting the positional shift amount to generate a corrected tomographic image on at least one tomographic plane of the subject, and
wherein the processor is further configured to perform image quality evaluation for a region of interest including the feature point in the corrected tomographic image, and determines whether the derived positional shift amount is appropriate or inappropriate based on a result of the image quality evaluation.