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Fig. 2B. 29-year-old woman with spontaneous regression of right
transverse and sigmoid dural arteriovenous fistula without therapy. After
patient was observed for approximately 6 months, source image of follow-up 3D
TOF MR angiography shows disappearance of both multiple high-intensity
structures adjacent to sinus wall and high-intensity areas in venous sinus,
which are suggestive of dural arteriovenous fistula.