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Abstract #3261

Evaluation of collateral circulation in intracranial atherosclerosis using random vessel-encoded arterial spin labeling

Lirong Yan1, Xiaoyue Ma2,3, Hong Zheng1, Yan Wang2,3, and Meiyun Wang2,3

1USC Stevens Neuroimaging and Informatics Institute, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States, 2Department of Radiology, Zhengzhou University People’s Hospital & Henan Provincial People’s Hospital, Zhengzhou, China, 3Henan Key Laboratory for Medical Imaging of Neurological Diseases, Zhengzhou, China

Collateral circulation plays an important role in predicting the clinical outcomes and risk of recurrent stroke in patients with stroke and transient ischemic attack (TIA). In this study, we evaluated the clinical utility of random vessel-encoded ASL (rVE-ASL) technique for the characterization of vascular territory and collateral circulation in a cohort of patients with stroke or TIA. The assessment of collaterals using rVE-ASL matched well with that of digital subtraction angiography (DSA).

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