Stereo PIV measurement in cerebral arterial model

Abstract

It is assumed that cerebral homodynamics is an important factor for the cerebrovascular disorders such as subarachnoid hemorrhage. Since a blood vessel has bend and bifurcation with pulsatile blood flow, the flow structure becomes complex and in the three-dimensions. In order to obtain the information on velocity components at an orbital location and time, the stereo PIV technique is applied to measure and visualize flow in the realistic cerebral aneurysm model, which is based on the medical image data. Because it is difficult to place the calibration plate, the paper presents the calibration method such that laser beams create calibration points. As a result, the flow structure along the aneurysm is observed successfully.