WSS at the aneurysm initiation site: Distribution on flattened branches

Animation of the wall shear stress field during the cardiac cycle. Data belongs to a study aimed at characterizing the WSS at the aneurysm initiation site. Cases were anterior cerebral arteries (ACAs) harboring an aneurysm that had been virtually removed to approximate the pre-aneurysm geometry. Controls were ACAs that had never formed an aneurysm. ACA branches were flattened using the Vascular Modeling Toolkit (VMTK) to be able to view the whole branch surface at once. wss_normalized_ps.gif uses a fixed color range from 0 to 2 times the average WSS on the branch at peak systole. wss_normalized.gif uses a variable color range from 0 to 2 times the average WSS on the branch at the current timestep. This way of normalizing the color range emphasizes changes in distribution rather than magnitude. Contact: [e-mail]