Granted Patent B2

US 12,731,672 · App. 17/411,473 · Granted Sep 8, 2026

Inventors: Takuya Sakaguchi (Utsunomiya, JP); Kazumasa Arakita (Utsunomiya, JP); Hideaki Ishii (Nasushiobara, JP); Takahiko Nishioka (Otawara, JP)

Assignee: CANON KABUSHIKI KAISHA

G16H30/40G16H30/20G16H50/30

Abstract

Claims (36)

1 . A medical image processing apparatus comprising:

processing circuitry configured to:

acquire a first parameter pertaining to a fractional flow reserve of a coronary artery of a subject and a second parameter pertaining to at least one of a shape, character, and fluid resistance related to the coronary artery;

set a weighting factor for the coronary artery, wherein a heavier value is set for the weighting factor at a proximal side than the weighting factor at a distal side; and

calculate, based on the first parameter, the second parameter, and the weighting factor, an index pertaining to a condition of the subject.

2 . The medical image processing apparatus according to claim 1 , wherein the processing circuitry is configured to acquire, as the first parameter, a pertaining to the fractional flow reserve acquired based on an image of the coronary artery of the subject.

3 . The medical image processing apparatus according to claim 1 , wherein the processing circuitry is configured to reset the weighting factor to a weighting factor proportional to an area of a short axis cross section of the coronary artery.

4 . The medical image processing apparatus according to claim 1 , wherein the processing circuitry is configured to reset the weighting factor to a weighting factor proportional to an area or volume of perfusion by the coronary artery.

5 . The medical image processing apparatus according to claim 1 , wherein the processing circuitry is configured to reset the weighting factor to a weighting factor that differs per branch of the coronary artery.

6 . The medical image processing apparatus according to claim 1 , wherein the processing circuitry is configured to:

further acquire a third parameter pertaining to a myocardium of the subject; and

calculate, based on the first parameter, the second parameter, the weighting factor, and the third parameter, an index pertaining to a condition of the subject.

7 . The medical image processing apparatus according to claim 6 , wherein the processing circuitry is configured to further set, for the third parameter, weighting associated with an anatomical position of the myocardium.

8 . The medical image processing apparatus according to claim 1 , wherein the processing circuitry is configured to:

further acquire a fourth parameter pertaining to a force generated by a pulsation of a myocardium of the subject; and

further use the fourth parameter to calculate an index pertaining to a condition of the subject.

9 . The medical image processing apparatus according to claim 1 , wherein the processing circuitry is configured to cause an image of spatial distribution of the index to be displayed.

10 . The medical image processing apparatus according to claim 1 , wherein the processing circuitry is configured to cause a map to be displayed, the map reflecting a value of the first parameter and a value of the second parameter included in the index.

11 . The medical image processing apparatus according to claim 1 , wherein the processing circuitry is configured to calculate, as an index pertaining to a condition of the subject, an index pertaining to a risk on the subject.

12 . The medical image processing apparatus according to claim 1 , wherein the processing circuitry is configured to calculate, as an index pertaining to a condition of the subject, an index pertaining to benefits for the subject.

13 . A medical image processing system comprising:

the medical image processing apparatus according to claim 1 ; and

a medical information display apparatus.

14 . The medical image processing apparatus according to claim 1 , wherein the fractional flow reserve is calculated at two or more different positions along a longitudinal axis of the coronary artery.

15 . The medical image processing apparatus according to claim 1 , wherein the processing circuitry is configured to cause a display to display the first parameter, the second parameter, and the weighting factor.

16 . The medical image processing apparatus according to claim 1 , wherein the processing circuitry is configured to reset the weighting factor to a weighting factor pertaining to an area of a short axis cross section of the coronary artery.

17 . The medical image processing apparatus according to claim 1 , wherein the processing circuitry is configured to reset the weighting factor to a weighting factor pertaining to an area or volume of perfusion by the coronary artery.

18 . A medical image processing apparatus comprising:

processing circuitry configured to:

acquire a first parameter pertaining to a fractional flow reserve of a coronary artery of a subject and a second parameter pertaining to a myocardium or a pulsation of the myocardium of the subject;

set a weighting factor for the coronary artery, wherein a heavier value is set for the weighting factor at a proximal side than the weighting factor at a distal side; and

calculate, based on the first parameter, the second parameter, and the weighting factor, an index pertaining to a condition of the subject.

19 . A medical image processing method comprising:

acquiring a first parameter pertaining to a fractional flow reserve of a coronary artery of a subject and a second parameter pertaining to at least one of a shape, character, and fluid resistance related to the coronary artery;

set a weighting factor for the coronary artery, wherein a heavier value is set for the weighting factor at a proximal side than the weighting factor at a distal side; and

calculating, based on the first parameter, the second parameter, and the weighting factor, an index pertaining to a condition of the subject.

Assignments (2)

Priority Claims (1)

Continuity (1)

References Cited (17)