Patent ID: 11918402
Assignee: FUJIFILM CORPORATION
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 0:
1. A radiation image processing device comprising:
at least one processor,
wherein the processor is configured to
acquire an imaging condition in a case in which a radiation image of a subject is acquired by a radiation detector detecting radiation transmitted through the subject in a state in which an object is interposed between the subject and the radiation detector,
derive a body thickness distribution of the subject based on the radiation image and the imaging condition,
derive a radiation characteristic of the object based on the body thickness distribution,
derive a primary ray distribution and a scattered ray distribution of the radiation detected by the radiation detector by using the imaging condition, the body thickness distribution, and the radiation characteristic of the object, and
derive an error between a sum of the primary ray distribution and the scattered ray distribution and a pixel value at each position of the radiation image, update the body thickness distribution such that the error is smaller than a predetermined threshold value, and repeat derivation of the radiation characteristic based on the updated body thickness distribution and derivation of the primary ray distribution and the scattered ray distribution.