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

Claim 16:
17. A tomographic image generating method comprising:
acquiring 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;
reconstructing 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;
detecting a plurality of feature point from a plurality of the tomographic images;
discriminating whether the corresponding tomographic plane corresponding to the tomographic image in which each of the plurality of feature points is detected is a focal plane, and
deriving 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 which is discriminated to be the focal plane.