Computational flow dynamics of the severe m1 XXXX before and after stenting.

@entity1 @entity850 @entity1642 @entity2791
PURPOSE: Computational flow dynamic (CFD) study has not been widely applied in intracranial @entity2791 due to requirement of high resolution in identifying the small intracranial artery. We described a process in CFD study applied to symptomatic severe intracranial (M1) @entity850 before and after stenting. MATERIALS AND METHODS: Reconstructed 3D angiography in STL format was transferred to Magics (Materialise NV, Leuven, Belgium) for smoothing of vessel surface and trimming of branch vessels and to HyperMesh (Altair Engineering Inc., Auckland, New Zealand) for generating tetra volume mesh from triangular surface-meshed 3D angiogram. Computational analysis of blood flow in the blood vessels was performed using the commercial finite element software ADINA Ver 8.5 (ADINA R _ D, Inc., Lebanon, MA). The distribution of @entity1642 ( @entity1642 ), peak velocity and pressure in a @entity1 was analyzed before and after intracranial stenting. RESULTS: Computer simulation of @entity1642 , flow velocity and wall pressure before and after stenting could be demonstrated three dimensionally by video mode according to flow vs. time dimension. Such flow model was well correlated with angiographic finding related to maximum degree of @entity850 . Change of @entity1642 , peak velocity and pressure at the severe @entity850 was demonstrated before and after stenting. There was no @entity1642 after stenting in case without residual @entity850 . CONCLUSION: Our study revealed that CFD analysis before and after intracranial stenting was feasible despite of limited vessel wall dimension and could reveal change of @entity1642 as well as flow velocity and wall pressure.
