Image processing device, image processing method, and image processing program
A processor, specifies a target bone, which is a target of evaluation, by excluding a fracture and an artificial object in a bone part image in which at least a bone component of a subject is extracted, and derives an evaluation result indicating a state of a bone of the subject based on the target bone.
1 . An image processing device comprising:
at least one processor,
wherein the processor
specifies a target bone, which is a target of evaluation, by excluding a fracture and an artificial object in a bone part image in which at least a bone component of a subject is extracted,
derives an evaluation result indicating a state of a bone of the subject based on the target bone, and
derives a relationship with a bone adjacent to the target bone, as an indicator indicating the state of the bone, and derives the evaluation result based on the indicator.
2 . The image processing device according to claim 1 ,
wherein the processor derives the bone part image from a first radiation image and a second radiation image, which are acquired by imaging the subject with radiation having different energy distributions.
3 . The image processing device according to claim 1 ,
wherein the processor derives at least one of a bone density of the target bone or information on a microstructure of the target bone, as the indicator indicating the state of the bone, and derives the evaluation result based on the indicator.
4 . The image processing device according to claim 3 ,
wherein the processor derives a representative value of the bone density in the target bone as the indicator.
5 . The image processing device according to claim 4 ,
wherein the processor derives the representative value of the bone density for each of a plurality of lines in a predetermined direction in the target bone, and derives a representative value of the representative values of the respective lines as the indicator.
6 . The image processing device according to claim 1 ,
wherein the processor displays the bone part image in which the target bone is emphasized, and the evaluation result.
7 . The image processing device according to claim 1 ,
wherein the processor derives a difference value between a centroid of the target bone and a centroid of the bone adjacent to the target bone in a predetermined direction as the relationship with the bone adjacent to the target bone.
8 . An image processing method comprising:
specifying a target bone, which is a target of evaluation, by excluding a fracture and an artificial object in a bone part image in which at least a bone component of a subject is extracted;
deriving an evaluation result indicating a state of a bone of the subject based on the target bone; and
deriving a relationship with a bone adjacent to the target bone, as an indicator indicating the state of the bone, and derives the evaluation result based on the indicator.
9 . A non-transitory computer-readable storage medium that stores an image processing program causing a computer to execute:
a procedure of specifying a target bone, which is a target of evaluation, by excluding a fracture and an artificial object in a bone part image in which at least a bone component of a subject is extracted;
a procedure of deriving an evaluation result indicating a state of a bone of the subject based on the target bone; and
a procedure of deriving a relationship with a bone adjacent to the target bone, as an indicator indicating the state of the bone, and derives the evaluation result based on the indicator.