1Shapiro SA.Camphell.Seully T.Hemorrhagie dilation of the fourth ventriele:an ominous predictor[J].J Neurosurg, 1994,80:805- 806.
2Sarwat M.Decrease in ventricular and sulcal size after death[J]. Radiology, 1978,127:409.
3JM Gomori,l Steiner,E Melamed,et al.The assessment of changes in brain volume using combined linear measurements:a CT-scan study[J].Neuroradiology, 1982,26:21.