1028. Aneurysm treatment response prediction in follow up black blood MRI after Aspirine or Stent. A series analysis of 3 cases.

Authors: Athanasios Petridis, MD, IFAANS; Marcel Kamp; Hans Jakob Steiger (Duesseldorf, Germany)

Introduction: Black blood MRI is a promising imaging tool in predicting aneurysm rupture. We investigated its value in follow up examinations after endovascular and conservative treatment of intracranial aneurysms Methods: Case series of 3 patients. Two patients were treated with stent and coil and one with Aspirine (ASS). Correlation of treatment response and contrast enhancement of the aneurysm wall is examined by black blood MRIs (follow up was 8 months). Results: In the first case stenting failed to treat the aneurysm and contrast enhancement in the wall did never subside during the follow up black blood MRI. The patient died 11 months after treatment by a subarachnoid hemorrhage. In the second case the aneurysm responded well to stenting and decreased in size, which could be seen by significant attenuation of contrast enhancement in black blood MRI in the follow up time of 8 months. In the third case the aneurysm responded to Aspirine treatment and the contrast enhancement in its wall decreased after 8 months of therapy Conclusion: Black blood MRI seems to be a promising tool not only in predicting aneurysms at risk of rupture, but also in observing treatment responses after endovascular procedures or even Aspirine administration.