Effects of Electrical Stimulation of the Gasserian Ganglion on Regional Cerebral Blood Flow after Induced Subarachnoid Hemorrhage in Pigs Evaluated by 99mTc-HMPAO-SPECT - Ebel , H; Semmelmann , G; Friese , M; Volz , M; Lee , J; Dück , M; Schomäcker , K; Varga , J; Furka , I; Schröder , R; Klug , N; Y (min - Minimally Invasive Neurosurgery, 2001)