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Fig 5. Dural arteriovenous fistula in left transverse-sigmoid sinus in a 71-year-old man (case 2).
A, Color overlay of relative cerebral blood volume (rCBV) map shows marked increase of CBV in the left hemisphere (mean rCBV ratio, 1.94).
B, Color overlay of rCBV map obtained after partial embolization shows improvement of increase of CBV in the left hemisphere (mean rCBV ratio, 1.74).
C, Color overlay of rCBV map obtained after surgical operation (direct packing of the venous sinus) shows more improvement of increase of CBV in the left hemisphere (mean rCBV ratio, 1.23).
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