Medical image processing apparatus, medical image processing method and storage medium

Patent metadata

Field	Value
Publication number	US-11348244-B2
Application number	US-202016835840-A
Country	US
Kind code	B2
Filing date	Mar 31, 2020
Priority date	Apr 1, 2019
Publication date	May 31, 2022
Grant date	May 31, 2022

Abstract

A medical image processing apparatus according to an embodiment includes processing circuitry. The processing circuitry is configured to obtain feature values related to the shape and a property of the heart. The processing circuitry is configured to estimate, by using the feature values, a state of the heart after a chest is opened. The processing circuitry is configured to estimate, based on a result of the estimation of the state of the heart, a state of the heart after the chest is closed after a treatment is completed. The processing circuitry is configured to output a parameter related to the estimated state of the heart after the chest is closed to a display.

First claim

What is claimed is:

1. A medical image processing apparatus, comprising:
processing circuitry configured to
obtain feature values related to a shape and a property of a heart of a subject;
estimate, by using the feature values, a first shape of the heart after being deformed by a manipulation to open a chest of the subject;
estimate, based on the first shape of the heart, a second shape of the heart after being deformed by a manipulation to close the chest after a treatment of a heart valve is completed; and
output a parameter related to the second shape of the heart to a display.

2. The medical image processing apparatus according to claim 1 , wherein the processing circuitry obtains the feature values from at least one of: an X-ray CT apparatus, a magnetic resonance imaging apparatus, an ultrasound diagnosis apparatus, and a database.

3. The medical image processing apparatus according to claim 1 , wherein, as the feature values, the processing circuitry obtains at least one of: shape data of the heart, firmness of the heart, pressure of the heart, and mass of the heart.

4. The medical image processing apparatus according to claim 1 , wherein the processing circuitry takes into account a positional change of the heart caused by the manipulation to open the chest and the manipulation to close the chest and estimates the first shape and the second shape of the heart.

5. The medical image processing apparatus according to claim 4 , wherein the processing circuitry estimates the first shape and the second shape of the heart, while further taking into account at least one of: the heart being pressured by another structure; an inflow of blood into the heart and a blood vessel; cardiac beats of the heart; relaxation of a muscle caused by anesthesia; and temperature.

6. The medical image processing apparatus according to claim 1 , wherein, as the parameter, the processing circuitry outputs information indicating a treatment effect of surgery to the display.

7. The medical image processing apparatus according to claim 6 , wherein, as the information indicating the treatment effect, the processing circuitry outputs, to the display, at least one of: an effective height, a coaptation height, coordinates of a center of a free edge of each of a plurality of valve cusps included in a heart valve, and information indicating whether positions of the centers of the free edges of the valve cusps match one another and how much deviation there is.

8. The medical image processing apparatus according to claim 1 , wherein the processing circuitry obtains the feature values with respect to a range of the heart including ventricles, atria, heart valves, and a part of an aorta.

9. The medical image processing apparatus according to claim 1 , wherein the processing circuitry obtains the feature values related to the shape, based on an image of the heart generated before the chest is opened.

10. The medical image processing apparatus according to claim 1 , wherein the processing circuitry estimates the first shape of the heart, according to an incision region of the chest and an aorta, an angle by which the chest is opened, and a moving position of the aorta.

11. The medical image processing apparatus according to claim 1 , wherein the processing circuitry:
estimates the first shape of the heart after the chest is opened, based on a deformation simulation of a biological tissue; and
estimates the second shape of the heart, by a treatment simulation based on the first shape of the heart and a deformation simulation of a biological tissue after the treatment.

12. The medical image processing apparatus according to claim 11 , wherein the deformation simulation of the biological tissue after the treatment estimates the state of the heart, based on at least a deformation amount of the biological tissue after the treatment and a physical quantity of a graft for the treatment.

13. A medical image processing method, comprising:
obtaining feature values related to a shape and a property of a heart of a subject;
estimating, by using the feature values, a first shape of the heart after being deformed by a manipulation to open a chest of the subject;
estimating, based on the first shape of the heart, a second shape of the heart after being deformed by a manipulation to close the chest after a treatment of a heart valve is completed; and
outputting a parameter related to the second shape of the heart to a display.

14. A non-transitory computer-readable storage medium having plural computer-executable commands recorded therein, the commands causing the computer to realize:
an obtaining function to obtain feature values related to a shape and a property of a heart of a subject;
an estimating function to estimate, by using the feature values, a first shape of the heart after being deformed by a manipulation to open a chest of the subject and estimate, based on the first shape of the heart, a second shape of the heart after being deformed by a manipulation to close the chest after a treatment of a heart valve is completed; and
an output function to output a parameter related to the second shape of the heart to a display.

Assignees

• Univ Tokyo
• Canon Medical Systems Corp

Inventors

• Sakuma Ichiro
• Ono Minoru
• Maeda Eriko
• Nawata Kan
• Yamauchi Haruo
• Tsukihara Hiroyuki
• Ino Kenji
• Shige Fumimasa
• Fujimoto Katsuhiko
• Sakaguchi Takuya

Classifications

• G16H50/30

  for calculating health indices; for individual health risk assessment · CPC title

• G06T7/74

  involving reference images or patches · CPC title

• A61B34/10 Primary

  Computer-aided planning, simulation or modelling of surgical operations · CPC title

• G06T2207/30048

  Heart; Cardiac · CPC title

• G16H50/50 Primary

  for simulation or modelling of medical disorders · CPC title