6Murayama Y, Malisch T, Guglielmi G,et al.Incidence of cerebral vasospasm after endovascular treatment of acutely ruptured aneurysms: report on 69cases[J]. J Neurosurg,1997.87(6):830～5.
7Handa Y, Weir BK, Nosko M, et al. The effect of timing of clot removal on chronic vasospasm in a primate model [J].J Neurosurg, 1987,67(4):558～64.
8Fisher CM, Kistler JP, Davis JM, et al. Relation of cerebral vasospasm to subarachnoid hemorrhage visualized by computerized tomographic scaning[J].Neurosurgery,1980,6(1):1～9.
