MRI of angiographically occult vascular malformations.

Détails

ID Serval
serval:BIB_1EBE626CEB97
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
MRI of angiographically occult vascular malformations.
Périodique
AJR: American journal of roentgenology
Auteur(s)
Lemme-Plaghos L., Kucharczyk W., Brant-Zawadzki M., Uske A., Edwards M., Norman D., Newton T.H.
ISSN
0361-803X
Statut éditorial
Publié
Date de publication
06/1986
Peer-reviewed
Oui
Volume
146
Numéro
6
Pages
1223-1228
Langue
anglais
Résumé
Eleven patients with 15 angiographically occult arteriovenous malformations were studied by magnetic resonance (MR) imaging and computed tomography (CT). Five patients had biopsy proof; six were clinically diagnosed from the long-term clinical follow-up (more than 3 years) and imaging features. Of the 15 lesions, 11 were recognized by both CT and MR. Each method was falsely negative for two lesions. The most useful contribution of MR in the characterization of angiographically occult arteriovenous malformations was the depiction of hemorrhagic foci in 12 of 13 lesions seen on MR. High-attenuation foci indicative of hematomas were seen in only five lesions on CT; the rest were iso- or hypoattenuating. CT detected two very small lesions, in one case as punctate foci of enhancement and in the other as punctate calcification, that were not seen with MR. MR complements CT in characterizing angiographically occult arteriovenous malformations and in distinguishing them from similar-appearing lesions, in particular, small neoplasms. However, when such lesions are seen with only focal calcification and subtle enhancement on CT, routine MR may miss them.
Mots-clé
Adolescent, Adult, Angiography, Brain Neoplasms/radiography, Calcinosis/radiography, Child, Child, Preschool, Diagnosis, Differential, Evaluation Studies as Topic, Female, Hematoma/radiography, Humans, Infant, Intracranial Arteriovenous Malformations/diagnosis, Intracranial Arteriovenous Malformations/radiography, Magnetic Resonance Spectroscopy/diagnostic use, Male, Middle Aged, Tomography, X-Ray Computed
Pubmed
Web of science
Création de la notice
25/07/2008 11:53
Dernière modification de la notice
03/03/2018 14:36
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