Fig. 1From: Features of branch occlusive disease-type intracranial atherosclerotic stroke in young patientsProfile of MCA stenosis. As shown in the figure, S represents the distance from the beginning of MCA to the center of stenosis, M1 represents the distance from the beginning of MCA to the point of bifurcation, and SL represents the stenosis length. Percent diameter stenosis (%stenosis) was calculated using the WASID method [8]Back to article page