Dr. Vivek Yedavalli returns this month, along with Dr. Hamza Adel Salim to share insights on their papers Association of Pretreatment Perfusion Imaging Parameters With 90-Day Excellent Functional Outcomes in Anterior Circulation Distal Medium Vessel Occlusion Stroke and Hypoperfusion Intensity Ratio Less Than 0.4 Is Associated with Favorable Outcomes in Unsuccessfully Reperfused Acute Ischemic Stroke with Large-Vessel Occlusion. (16:55)