Authors: J B Fiebach P D Schellinger K Geletneky P Wilde M Meyer W Hacke K Sartor
Publish Date: 2003/12/04
Volume: 46, Issue: 1, Pages: 44-48
Abstract
There is doubt as to whether acute haemorrhage is visible on MRI We carried out MRI within 6 h of symptom onset on five patients with minor low Hunt and Hess grades 1 or 2 subarachnoid haemorrhage SAH diagnosed by CT to search for any specific pattern We used our standard stroke MRI protocol including multiecho proton density PD and T2weighted images echoplanar EPI diffusion DWI and perfusion PWI weighted imaging and MRA In all cases SAH was clearly visible on PDweighted images with a short TE In four patients it caused a lowsignal rim on the T2weighted source images of PWI and DWI revealed high signal in SAH In the fifth patient SAH was perimesencephalic susceptibility effects from the skull base made it impossible to detect SAH on EPI DWI and T2weighted images Perfusion maps were normal in all cases MRA and conventional angiography revealed an aneurysm in only one patient Stroke MRI within 6 h of SAH thus shows a characteristic patternWe wish to express our gratitude to all members of the Heidelberg departments of neuroradiology neurology neurosurgery and the emergency room team without whom this study could not have been achieved The Deutsche Forschungsgemeinschaft supports our work with two research grants SCHE 613/11 and FI 897/11
Keywords: