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© RSNA, 2020 Online extra material is available with this article. See additionally the editorial by Yin in this concern.Background A superselective (SS) arterial spin labeling (ASL) MRI technique may be used to monitor the revascularization area as a supplementary or alternate modality to digital subtraction angiography (DSA), aided by the advantage of being noninvasive. Purpose To examine whether SS-ASL perfusion MRI could possibly be used to visualize the revascularization area aft