US 12,171,528 B2
Blood vessel wall thickness estimation method, blood vessel wall thickness estimation device, and blood vessel wall thickness estimation system
Yoshie Sugiyama, Osaka (JP)
Assigned to OSAKA UNIVERSITY, Osaka (JP)
Appl. No. 17/628,394
Filed by OSAKA UNIVERSITY, Osaka (JP)
PCT Filed Feb. 19, 2020, PCT No. PCT/JP2020/006394
§ 371(c)(1), (2) Date Jan. 19, 2022,
PCT Pub. No. WO2021/019809, PCT Pub. Date Feb. 4, 2021.
Claims priority of application No. 2019-142321 (JP), filed on Aug. 1, 2019.
Prior Publication US 2022/0280049 A1, Sep. 8, 2022
Int. Cl. A61B 5/00 (2006.01); A61B 5/02 (2006.01); A61B 5/055 (2006.01); G06T 7/00 (2017.01)
CPC A61B 5/02007 (2013.01) [A61B 5/055 (2013.01); G06T 7/0012 (2013.01); G06T 2207/30101 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A blood vessel wall thickness estimation method comprising:
obtaining behavioral information based on a video including a blood vessel wall obtained using four-dimensional angiography, the behavioral information being numerical information about changes over time in positions of a plurality of predetermined points in the blood vessel wall;
generating estimation information for estimating a thickness of the blood vessel wall based on the behavioral information obtained in the obtaining; and
outputting the estimation information generated in the generating,
wherein the estimation information is information in which at least one of the following is visualized: a change in displacement over time; a change in speed over time; a change in acceleration over time; a change in kinetic energy over time; a spring constant obtained from the displacement and the acceleration; or a Fourier coefficient obtained from the change in the displacement over time, and
the outputting includes:
when the change in the displacement over time is visualized in the estimation information, outputting the thickness of the blood vessel wall estimated based on an indicator of the displacement;
when the change in the speed over time is visualized in the estimation information, outputting the thickness of the blood vessel wall estimated based on an indicator of the speed;
when the change in the acceleration over time is visualized in the estimation information, outputting the thickness of the blood vessel wall estimated based on an indicator of the acceleration;
when the change in the kinetic energy over time is visualized in the estimation information, outputting the thickness of the blood vessel wall estimated based on an indicator of the kinetic energy;
when the spring constant is visualized in the estimation information, outputting the thickness of the blood vessel wall estimated based on a magnitude of the spring constant; and
when the Fourier coefficient is visualized in the estimation information, outputting the thickness of the blood vessel wall estimated based on an indicator of the Fourier coefficient.