US 12,127,816 B2
Medical image processing apparatus
Takuma Igarashi, Nasushiobara (JP)
Assigned to CANON MEDICAL SYSTEMS CORPORATION, Tochigi (JP)
Filed by CANON MEDICAL SYSTEMS CORPORATION, Tochigi (JP)
Filed on Jun. 2, 2022, as Appl. No. 17/830,799.
Application 17/830,799 is a division of application No. 16/858,937, filed on Apr. 27, 2020, granted, now 11,375,904.
Application 16/858,937 is a division of application No. 15/837,632, filed on Dec. 11, 2017, granted, now 10,667,699, issued on Jun. 2, 2020.
Application 15/837,632 is a division of application No. 14/643,088, filed on Mar. 10, 2015, granted, now 9,877,657, issued on Jan. 30, 2018.
Claims priority of application No. 2014-046441 (JP), filed on Mar. 10, 2014.
Prior Publication US 2022/0296106 A1, Sep. 22, 2022
Int. Cl. A61B 5/02 (2006.01); A61B 5/00 (2006.01); A61B 5/021 (2006.01); A61B 5/026 (2006.01); A61B 6/00 (2006.01); A61B 6/03 (2006.01); A61B 6/50 (2024.01); G06T 7/62 (2017.01); A61B 34/10 (2016.01)
CPC A61B 5/02007 (2013.01) [A61B 5/021 (2013.01); A61B 5/026 (2013.01); A61B 5/7278 (2013.01); A61B 6/032 (2013.01); A61B 6/486 (2013.01); A61B 6/503 (2013.01); A61B 6/504 (2013.01); A61B 6/507 (2013.01); A61B 6/5217 (2013.01); G06T 7/62 (2017.01); A61B 2034/105 (2016.02); G06T 2207/10081 (2013.01); G06T 2207/30048 (2013.01); G06T 2207/30104 (2013.01); G06T 2207/30172 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A computer-implemented method, comprising:
acquiring, based on a coronary artery in three-dimensional volume data, a distribution of a blood flow index corresponding to a pressure ratio between two points in the coronary artery;
specifying an inappropriate bypass portion of the coronary artery, where forming a bypass connection is inappropriate, based on information acquired based on the coronary artery in three-dimensional volume data, the information comprising an elasticity coefficient of a blood vessel wall of the coronary artery;
writing, into a memory, a position distribution of the inappropriate bypass portion in a three-dimensional space, the position distribution being obtained based on threshold processing of the elasticity coefficient of the blood vessel wall;
calculating a rendering pixel value for a two-dimensional or three-dimensional image based on the position distribution written into the memory;
generating the two-dimensional or three-dimensional image using the calculated rendering pixel value; and
causing a display to display a location of the specified inappropriate bypass portion together with a marker superimposed on the two-dimensional or three-dimensional image, the specified inappropriate bypass portion being displayed in a distinguishable manner, wherein
the specifying comprises specifying, as the inappropriate bypass portion, a portion of the coronary artery where the elasticity coefficient of the blood vessel wall is higher than a first threshold and lower than a second threshold.