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Abstract #2735

Age Specific Differences in Association Between White Matter Cerebral Blood Flow and Ischemic Lesion Severity

Hualu Han1, Dongye Li1, Huiyu Qiao1, Dandan Yang1, Zhensen Chen2, Runhua Zhang3,4, Gaifen Liu3,4, and Xihai Zhao1

1Center for Biomedical Imaging Research, Department of Biomedical Engineering, Tsinghua University School of Medicine, Beijing, China, 2Department of Radiology, University of Washington, Seattle, WA, United States, 3Beijing Tiantan Hospital, Capital Medical University, Beijing, China, 4China National Clinical Research Center for Neurological Diseases, Beijing, China

White matter lesion (WML), one of the sequelae of cerebral hypoperfusion, accumulates with age. This study sought to investigate the relationship between cerebral blood flow (CBF) and WML severity with age in asymptomatic adults. We found that WML scores were strongly associated with WM CBF, suggesting that WM CBF might be an effective indicator for severity of WMLs. We also found that the WM CBF increased with age, consistent with the greater WM cerebrovascular reactivity response in elderly individuals. In addition, our findings of ascending WM CBF cut-off values revealed that the risk of developing WML increases with age.

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