Fig. 3From: Value of susceptibility weighted imaging (SWI) in assessment of intra-arterial thrombus in patients with acute ischemic strokeAn 56-year-old male. DWI a shows no definite abnormality, SWI b, c revealed asymmetrical susceptibility vessel sign in the form prominent cortical veins (arrow head) on the left cerebral hemisphere along (M1–M6) representing an area at riskBack to article page