Preliminary study of wall shear stress of an intracranial aneurysmal model based on the data of Time-Resolved Three-Dimensional Phase-Contrast MRI
Inagawa S, Takehara Y, Takeda H, Yamashita S, Isoda H, Ohkura Y, Kosugi T, Hirano M, Alley M, Markl M, Pelc N, Sakahara H
Hamamatsu University School of Medicine
We developed a postprocessing software for 4D data sets obtained by 3D cine phase-contrast MRI (4D-Flow) called ""Flow visualization and analysis (Flova)"". Flova can calculate wall shear stress (WSS) in a few minutes based on the data of both 4D-Flow and MR angiography. We evaluated the accuracy of WSS obtained by Flova using a straight tube with a 16mm diameter and constant flow. We calculated the WSS of a silicon intracranial aneurysmal model three times actual size with constant flow by Flova. The aneurysm model had relatively weaker WSS in the bleb than in the surrounding aneurysmal wall.