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Abstract #4836

Preoperative predictors of hyperperfusion after CEA: a study using vessel selective ASL

Tianye Lin1, Zhichao Lai2, Yuelei Lyu2, Zhentao Zuo3, Bing Wu4, Jianxun Qu4, Hui You2, Bo Hou2, Changwei Liu2, and Feng Feng2

1Radiology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China, 2Peking Union Medical College Hospital, Beijing, China, 3Institute of Biophysics, Chinese Academy of Sciences, Beijing, China, 4GE Healthcare, MR Research China, Beijing, China

To identify preoperative predictors for cerebral hyperperfusion (CHS) after CEA based on vessel selective ASL. The perfusion volume of each brain feeding artery and the corresponding mean CBF in each perfusion volume before and after CEA were calculated. It was found that the sum of perfusion volumes corresponding to LICA, RICA and VBA (TotalPerVol) and the preoperative territory perfusion of the surgery side (preCBF_surg) was inversely correlated with the degree of CBF increase. The result indicated that tASL and ASL were useful in predicting cerebral hyperperfusion.

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