Super selective arterial spin labeling (ssASL) is a MR territory perfusion technique based on arterial spin labeling. The efficacy of this technique to demonstrate the blood supply of external carotid artery (ECA) into the brain has not been studied. This study demonstrated ssASL was in good agreement with DSA, the gold standard for cerebral vessels, in the evaluation of preoperative ECA collaterals, superficial temporal artery to middle cerebral artery bypass and synangiosis-induced vessels in Moyamoya disease.
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