Increased Oxygen Extraction Demonstrated on Gradient Echo (T2*) Imaging in a Patient with Acute Ischaemic Stroke

456 Conclusion These 2 case reports emphasize the difficulties of the neuroradiological diagnosis and of the decision-making for the management of hemorrhagic dissection of the ACA. The second patient was surgically treated but, unfortunately, the wrapping of the dissected arterial wall could not prevent the recurrence of the hemorrhage. On the other hand, the follow-up showed that the dissection tends to heal spontaneously with restoration of a normal arterial lumen and that the conservative treatment was effective with a good outcome in both cases. The literature review ( table 1 ) and our own experience seem to suggest that this therapeutic option could be safely proposed for the management of hemorrhagic dissections of the ACA.