Compared to the CT study about 3 hours apart.
- newly developed extensive subarachnoid haemorrhage centred in basal cisterns extending to Sylvian fissure and smearing the cortical sulci
- evidence of intraventricular extension (extension to 4th ventricle) newly developed mild hydrocephalus and generalised sulcal effacement suggestive of cerebral oedema
- an interrupted and loss of definition of the hyperattenuating aneurysm lesion was seen in the course of the basilar artery by surrounding subarachnoid blood
- no evidence of midline shift is seen
IMPRESSION :
A newly developed subarachnoid haemorrhage is suggestive of a resultant ruptured basilar artery aneurysm, for further urgent interventional neurosurgeon consultation.