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Abstract #3519

Quantitative Assessment of Collaterals from External Carotid Artery with Modified Vessel Encoded Arterial Spin Labeling

Yi Dang1, Bing Wu2, Ying Sun3, Dapeng Mo4, Xiaoying Wang, 12, Jue Zhang1, 3, Jing Fang1, 3

1Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, China; 2Dept. of Radiology, Peking University First Hospital, Beijing, China; 3College of Engineering, Peking University, Beijing, China; 4Dept. of Neurosurgery, Peking University First Hospital, Beijing, China

The contribution of collaterals from internal carotid can be assessed by depicting of vascular perfusion territories using arterial spin labeling. But so far there is no method available to evaluate the collateral perfusion territory from external carotid in MR. In this study, we present a new labeling scheme on the basis of the vessel-encoded arterial spin labeling to quantitatively assess collaterals from external carotid. The results demonstrate that the proposed method is able to visualize the perfusion territory of ECA to depict the status of collateral circulation and can be used as a promising tool to assess cerebrovascular surgery.