Stroke is an acute cerebrovascular disease with rapid onset and high mortality. At the same time, it is difficult for unusual drugs to cross the blood brain barrier for effective treatment because its lesion site is in the brain. The time window for intravenous thrombolysis is 4.5 h after stroke, which is the best time to treat stroke. However, because of the narrow window, stroke patients often miss the best time for treatment even before the diagnosis is made.

Source from: stroke diagnostic technology