SSS anastomosed with the cavernous sinus via superficial middle cerebral vein(SMCV).
the contrast media was detained inside the cerebral veins and the injection were delayed ; the system of thalamostriate vein and vein of Galen dilated and the contrast media was detained inside the deep cerebral veins,it looked like snow-flake;
superficial cerebral veins
superficial middle cerebral veins
