MRI screening for acoustic neuroma without gadolinium: value of 3DFT-CISS sequence.
Neuroradiology
; 39(8): 593-8, 1997 Aug.
Article
em En
| MEDLINE
| ID: mdl-9272499
ABSTRACT
To evaluate the efficacy of a gradient-echo sequence (3DFT-CISS) in the diagnosis of acoustic neuromas, two independent observers twice reviewed the images of the temporal bones of 83 patients. Contrast-enhanced T1-weighted spin echo images were used as the reference, showing 18 acoustic neuromas, including 5 purely intracanalicular and one intralabyrinthine tumours. High sensitivity (89-94%), specificity (94-97%) and accuracy (94-95%) were found. Intraobserver (kappa 0.93-1) and interobserver (kappa 0.83-0.84) reproducibility were very good. The smallest intracanalicular tumour was overlooked twice by both observers; the intralabyrinthine tumour once by one observer. All tumours were detected with a less stringent decision criterion, at the expense of lower specificity.
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Temas:
ECOS
/
Aspectos_gerais
Bases de dados:
MEDLINE
Assunto principal:
Imageamento por Ressonância Magnética
/
Programas de Rastreamento
/
Neuroma Acústico
Tipo de estudo:
Diagnostic_studies
/
Observational_studies
/
Prognostic_studies
/
Risk_factors_studies
/
Screening_studies
Limite:
Humans
Idioma:
En
Revista:
Neuroradiology
Ano de publicação:
1997
Tipo de documento:
Article
País de afiliação:
Bélgica