Calculation method of coronary blood flow reserve ratio, calculation device and program of coronary blood flow reserve volume ratio

摘要

To easily calculate a coronary blood flow spare quantity ratio from information on a structure of a coronary artery.SOLUTION: A calculation method of a coronary blood flow spare quantity ratio includes: a first calculation procedure for calculating a coronary blood flow spare ability based on a normal coronary artery area which is a cross-section area of a normal part, and a lesion coronary artery area which is a cross-section area of a narrow part of the cross-section area of the coronary artery, and predetermined blood viscosity, blood specific gravity, and lesion length; a second calculation procedure for calculating pressure loss of the coronary artery in the narrow part based on the coronary blood flow spare ability calculated in the first calculation procedure, and a predetermined resting coronary blood flow velocity; and a third calculation procedure for calculating the coronary blood flow spare quantity ratio based on the pressure loss calculated in the second calculation procedure.SELECTED DRAWING: Figure 1