Abstract #4549

Aneurysmal wall enhancement is positively correlated with inflow angle in sidewall aneurysms

Mingzhu Fu¹, Fei Peng², Wenwen Chen¹, Aihua Aihua Liu², and Rui Li¹

¹Department of Biomedical Engineering, Tsinghua University, Center for Biomedical Imaging Research, Beijing, China, ²Department of Interventional Neuroradiology, Beijing Tiantan Hospital, Beijing, China

Synopsis

In this study, we utilized HR-VWI and 3D TOF-MRA images to investigate the relationship between AWE grades and aneurysm inflow angle. Statistics indicated that the AWE grades were positively associated with the aneurysm inflow angle. This is probably because a sidewall aneurysm with high inflow angle is easier to grow and cause slower inflow velocity and lower wall shear stress which contribute to inflammation processes on aneurysmal wall and lead to a high grade of AWE. The results of this study showed that the AWE was positively associated with aneurysm inflow angle.

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