• M Edjlali, C Rodriguez-Régent, J Hodel, R Aboukais, D Trystram, J-P Pruvo, J-F Meder, C Oppenheim, J-P Lejeune, X Leclerc, and O Naggara.
• Inserm UMR 894, Department of Neuroradiolgy, Faculty of Medicine Paris Descartes University, Pyschiatry and Neurosciences Centers, Sainte-Anne Hospital, Sorbonne Paris Cité, 1, rue Cabanis, 75014 Paris, France; Department of Neuroradiology, Lille Nord de France University, Roger Salengro Hospital, Lille University Hospitals, avenue Émile-Laine, 59037 Lille cedex, France. Electronic address: myriam.edjlali@gmail.com.
• Diagn Interv Imaging. 2015 Jul 1; 96 (7-8): 657-66.

AbstractTraumatic subarachnoid hemorrhage (SAH) has an annual incidence of 9 per 100 000 people. It is a rare but serious event, with an estimated mortality rate of 40% within the first 48hours. In 85% of cases, it is due to rupture of an intracranial aneurysm. In the early phase, during the first 24hours, cerebral CT, combined with intracranial CT angiography is recommended to make a positive diagnosis of SAH, to identify the cause and to investigate for an intracranial aneurysm. Cerebral MRI may be proposed if the patient's clinical condition allows it. FLAIR imaging is more sensitive than CT to demonstrate a subarachnoid hemorrhage and offers greater degrees of sensitivity for the diagnosis of restricted subarachnoid hemorrhage in cortical sulcus. A lumbar puncture should be performed if these investigations are normal while clinical suspicion is high. Copyright © 2015 Éditions françaises de radiologie. Published by Elsevier Masson SAS. All rights reserved.

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