Acupuncture is effective in the treatment of ischemic stroke,the mechanism of which is not completely clear.Magnetic resonance arterial spin labeling technique is cerebral perfusion imaging techniquedeveloped in recent years,which can repeatedly,non invasively detect cerebral blood flow changes.To explore the part of mechanism,people gradually applied it in clinical acupuncture and moxibustion.In this paper,the principle of ASL technology,the application in ischemic cerebrovascular disease,the application of acupuncture in the treatme...