CT ASSESSMENT OF SUBARACHNOID HEMORRHAGE - A COMPARISON BETWEEN DIFFERENT CT METHODS OF GRADING SUBARACHNOID HEMORRHAGE

A number of different CT classifications of subarachnoid haemorrhage ( SAH) were applied to a consecutive series of 50 patients with aneurysm al SAH. The best correlation with delayed ischaemic deficits (DID) was obtained with a score formed by the sum of the individual cisternal g rades except that of the cortical subarachnoid space. The findings emp hasize the significance of the extent of the SAH, rather than the pres ence of a localized cisternal clot with regard to the development of D ID.