Patent ID: 11896416
Assignee: SUZHOU RAINMED MEDICAL TECHNOLOGY CO., LTD.
Field: Medical technology (Instruments)
Classification: CPC A  G | IPC A  G

Claim 5:
6. The method for calculating coronary artery fractional flow reserve based on myocardial blood flow and CT image according to claim 1, wherein step S06 comprises:
S61: determining a blood flow in any one of blood vessels in the tree using Q=Qtotal×(V/Vtotal)3/4 based on a flow volume scale and a cardiac surface coronary artery tree obtained using a three-dimensional reconstruction of a cardiac CT, wherein Vtotal is a sum volume of blood in all cardiac surface coronary artery obtained using the three-dimensional reconstruction of the cardiac CT, V is a sum volume of blood in any one of blood vessels and its downstream blood vessel in the cardiac surface coronary artery tree;
S62: determining the blood flow velocity in any one of blood vessel in the tree using V1=Q/D based on the flow volume scale and the cardiac surface coronary artery tree obtained using the three-dimensional reconstruction of the cardiac CT, wherein D is an average diameter of the blood vessel.