Fig 5. A 67-year-old woman with seizures. A and B, Type IIa+b DAVF of the left transverse sinus draining into cortical veins and in the straight sinus. C and D, Injection of 9.3 mL of Onyx over 90 minutes through the middle meningeal artery. E, Postoperative 7-month assessment shows complete fistula cure.