Magnetic resonance angiography of cerebral developmental venous anomalies: its role in differential diagnosis.
Neuroradiology
; 35(2): 97-104, 1993.
Article
em En
| MEDLINE
| ID: mdl-8433801
ABSTRACT
CT, MRI and contrast angiography of 20 patients with 21 developmental venous anomalies (DVAs), so-called venous angiomas, were compared with magnetic resonance angiography employing a two-dimensional time-of-flight technique (2D-MRA). MRA was diagnostic in 17 DVAs, when both the primary 2D slices and the maximum-intensity-projection images were read. Contrast angiography still provides the best visualization of both DVA components dilated medullary veins and transcerebral draining vein; however, it is an invasive procedure and delivers no information about brain parenchyma. We regard MRI as necessary in cases with a suspected DVA because of the high rate of association with cavernomas 33% in this study. Acute neurological symptoms were caused by haemorrhage from an associated cavernoma and not from the DVA in 4 such cases. Thus MRA combined with MRI obviates angiography in most cases and offers a noninvasive diagnostic strategy adequate for DVAs.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Veias Cerebrais
/
Imageamento por Ressonância Magnética
/
Malformações Arteriovenosas Intracranianas
Tipo de estudo:
Diagnostic_studies
Limite:
Adolescent
/
Adult
/
Child
/
Female
/
Humans
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Male
/
Middle aged
Idioma:
En
Revista:
Neuroradiology
Ano de publicação:
1993
Tipo de documento:
Article