MRI in multiple vascular lesions : identification of the ruptured malformation

4 patients were recently admitted for subarachnoid haemorrhage with multiple vascular lesions. 3 of them presented with multiple aneurysms, and one with an aneurysm associated with an arteriovenous malformation. In these 4 cases identification of the ruptured lesion was difficult in spite of clinica...

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Bibliographic Details
Published in:Acta neurochirurgica 1991-01, Vol.112 (3-4), p.83-87
Main Authors: MOURIER, K. L, GELBERT, F, ASSOULINE, E, MORET, C, REIZINE, D, RAGGUENEAU, J. L, GEORGE, B
Format: Article
Language:English
Subjects:
Adult
Aged
Biological and medical sciences
Cerebral Arteries - pathology
Female
Humans
Intracranial Aneurysm - complications
Intracranial Aneurysm - diagnosis
Magnetic Resonance Imaging
Male
Medical sciences
Middle Aged
Neurology
Rupture, Spontaneous
Subarachnoid Hemorrhage - diagnosis
Subarachnoid Hemorrhage - etiology
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Summary:4 patients were recently admitted for subarachnoid haemorrhage with multiple vascular lesions. 3 of them presented with multiple aneurysms, and one with an aneurysm associated with an arteriovenous malformation. In these 4 cases identification of the ruptured lesion was difficult in spite of clinical examination, CT scan, and complete panangiography; on magnetic resonance imaging (MRI) was found a signal hyperintensity, mainly on T2 weighted views, corresponding to blood clots around the ruptured aneurysm. This signal hyperintensity was completely absent in the vicinity of the associated vascular lesion, which appeared only as a signal void corresponding to the blood flow inside the unruptured lesion. Therefore MRI can be used in such cases to identify the ruptured lesion, so permitting the choice of the best approach and strategy of treatment.
ISSN:0001-6268
0942-0940
DOI:10.1007/BF01405131