Fig. 1

Vascular wall enhancement in patients with RCVS. a, initially mild concentric enhancement, vascular imaging obtained 10 days after disease onset in a 48-year-old female; the enhancement was completely resolved at 7 years of follow-up; b, initially mild concentric enhancement, vascular imaging obtained 9 days after disease onset in a 52-year-old female; the enhancement was partially resolved 96 days later; c, initially marked concentric enhancement, vascular imaging obtained 10 days after disease onset in a 60-year-old female; the enhancement was partially resolved at 4.5 years of follow-up. The white arrowhead in c indicates partial volume of vein. Note that the enhanced vascular wall did not concordantly present at the site of vasoconstriction; d, upper, initially mild eccentric enhancement, vascular imaging obtained 25 days after disease onset in a 49-year-old female; lower, initially mild concentric enhancement, vascular imaging obtained 15 days after disease onset in a 48-year-old female. White arrows locate vascular wall enhancement. Yellow arrows locate vasoconstriction