Fig 1.

Schematic of the shunted pouches and their feeding arteries in transverse-sigmoid sinus dural arteriovenous fistulas. Purple indicates shunted venous pouches; APA, ascending pharyngeal artery; OA, occipital artery, MMA, middle meningeal artery; PAA, posterior auricular artery; VA, vertebral artery; SMB, stylomastoid branch of the OA; MB, mastoid branch of the OA; TOB, transosseous branches of the OA; JB, jugular branch of the APA; PB, petrosal branch of the MMA; PSB, petrosquamous branch of the MMA; Post B, posterior convexity branch of the MMA; PMA, posterior meningeal artery from the VA; Tent B, tentorial branch from the ICA; SPS, superior petrosal sinus; LTS, lateral tentorial sinus.