Fig. 2
From: Arterial transit artifact as a short-term prognostic indicator in acute ischemic stroke
Imaging features of arterial transit artifact. A DWI showed infarction of the left basal ganglia and corona radiata. B Infarction was depicted on 3D-T1WI. C CTA showed occluded MCA and formation of collateral circulation distal to the occlusion. D, E ASL of 1.5 s PLD showed decreased CBF in the left MCA territory and visible arterial transit artifact. F&G, ASL of 2.5 s PLD showed decreased CBF in the left MCA territory and visible arterial transit artifact. DWI: diffusion-weighted imaging; 3D-T1WI: 3-dimensional T1-weighted images; CTA, CT angiography; MCA, left middle cerebral artery; ASL, arterial spin labeling; PLD, postlabeling delay; CBF, cerebral blood flow