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Fig. 1A. —68-year-old woman with dural arteriovenous fistula of right transverse and sigmoid sinuses. Figures A–C were obtained before embolization, and D–F were obtained after embolization. Source image of 3D time-of-flight (TOF) MR angiography (TR/TE, 40/6.5; flip angle, 20°) clearly shows findings of multiple high-intensity nodular structures adjacent to sinus wall (small arrows) and multiple high-intensity spots around these structures—findings suggestive of feeding arteries—and shows high-intensity areas in venous sinus (large arrow) at right transverse and sigmoid sinuses.