The invention provides a
system and method for using computational fluid
mechanics to simulate and calculate fractional
blood flow reserve. The
system comprises a vascular tree model generation module, a computational grid generation module, a boundary condition setting module, an attribute setting module, a
solver and an aftertreatment module, wherein the vascular tree model generation module acquires a medical image, executes segmentation and reestablishes a geometric model of a vascular tree of an individual, the computational grid generation module generates a computational grid for the geometric model and establishes a CFD model of the vascular tree, the boundary condition setting module sets corresponding inlet and outlet boundary conditions for the CFD model of the vascular tree, the attribute setting module sets the
physical property and a flow equation of blood, the
solver seeks solutions on the CFD model of the vascular
tree based on the inlet and outlet boundary conditions so as to obtain fluid parameters around the vascular tree, the set
physical property and the flow equation, and the aftertreatment module conducts aftertreatment on the fluid parameters so as to obtain the fractional
blood flow reserve, and both the inlet boundary condition and outlet boundary condition have individual specificity. According to the
system and method for using computational fluid
mechanics to simulate and calculate the fractional
blood flow reserve, the accuracy of a
simulation result is guaranteed, and the calculation time acceptable to clinics can be achieved at the same time.