抄録
The paper aims to investigate the relationship between cerebrovascular geometry and hemodynamics in order to predict rupture and creation of cerebral aneurysms. The authors have been developing a numerical simulation system, which consists of medical image-based geometric modeling, grid generation, finite element fluid simulation, and scientific visualization. A database system is designed so as to organize and analyze medical imaging, physiological, and numerical data. The multivariate analyses are performed to estimate a maximum wall shear stress using 19 cases of the middle cerebral artery (MCA) calculations from the database system. The results are compared and show good agreement with those of numerical analysis. It is found that diameter of the MCA, ratio of diameter of branching to that of the MCA, and bifurcation angle between the MCA and brunching arteries are important geometric factors in determining the maximum wall shear stresses.
