A hybrid 1D and 3D approach to hemodynamics modelling for a patient-specific cerebral vasculature and aneurysm.
In this paper we present a hybrid 1D/3D approach to haemodynamics modelling in a patient-specific cerebral vasculature and aneurysm. The geometric model is constructed from a 3D CTA image. A reduced form of the governing equations for blood flow is coupled with an empirical wall equation and applied to the arterial tree. The equation system is solved using a MacCormack finite difference scheme and the results are used as the boundary conditions for a 3D flow solver. The computed wall shear stress (WSS) agrees with published data.
Ho
Harvey
H
Bioengineering Institute, University of Auckland, New Zealand. harvey.ho@auckland.ac.nz
Sands
Gregory
G
Schmid
Holger
H
Mithraratne
Kumar
K
Mallinson
Gordon
G
Hunter
Peter
P
D001783:Blood Flow Velocity; D001794:Blood Pressure; D002533:Cerebral Angiography / Q000379:methods*; D002536:Cerebral Arteries / Q000503:physiopathology*; D003198:Computer Simulation; D006801:Humans; D007089:Image Enhancement / Q000379:methods; D021621:Imaging, Three-Dimensional / Q000379:methods*; D002532:Intracranial Aneurysm / Q000000981:diagnostic imaging* / Q000503:physiopathology*; D008955:Models, Cardiovascular; D011857:Radiographic Image Interpretation, Computer-Assisted / Q000379:methods; D014057:Tomography, X-Ray Computed / Q000379:methods*