Table 1.

Patient profiles

Patient Number	1	2	3
age/sex	60/F	73/F	64/M
Chief complaint	Difficulty in conversation Aprophoria	Bilateral conjunctival hyperemia	General tonic convulsion Small hemorrhage on right temporal lobe
Shunt area	Torcular Hemophili -left transverse -sigmoid sinus	Bilateral cavernous sinuses	Right transverse -signmoid sinus
Classification	Cognard type II a+b Lalwani grade 3	Cognard type II a+b Barrow type D	Cognard type II a+b Lalwani grade 3
Feeding arteries	Bilateral occipital arteries Left posterior auricular ar- tery Left middle meningeal ar- tery Left accessory meningeal artery	Bilateral ascending pharyngeal arteries Bilateral middle meningeal arteries Bilateral meningohypophyseal arteries	Bilateral occipital arteries Right posterior auricular artery Right middle meningeal artery Left ascending pharyngeal artery
Draining course Treatment Outcome	Left superior petrosal -cavernous sinus -cortical vein (retrograde) Left Labbe's vein (retrograde) Right transverse -sigmoid sinus (antegrade) Transcatheter arterial em- bolization Improvement on MAIS-III test	bilateral superior ophthalmic veins (retrograde) left inferior ophthalmic veins (retrograde) Left uncal vein (retrograde) Basilar plexus (antegrade) Transcatheter sinus coil embolization Improvement in conjuctival hyperemia	Right cerebellar hemispheric veins (retrograde) Temporo -parieto -occipital cortical veins (retrograde) Superior sagittal -left trans- verse -sigmoid sinus (antegrade) Straight-left transverse -sigmoid sinus (antegrade) Transcatheter arterial embolization and sinus coil embolization No recurrence of convulsion
Period of ASL imaging acquisition	39th day before treatment 8POD* 112POD	11th day before treatment 20POD 120POD	19th day before treatment 19POD
*POD: postoperative day