Assessment of 3D T2-weighted high-sampling-efficiency technique (SPACE) for detection of cerebellar tonsillar motion: new useful sign for Chiari I malformation.
Clin Imaging
; 39(1): 42-50, 2015.
Article
em En
| MEDLINE
| ID: mdl-25457539
ABSTRACT
OBJECTIVE:
To describe tonsillar blackout sign (TBS) on three-dimensional (3D)-SPACE, evaluate its performance in identifying Chiari malformation (CM1) as diagnostic marker, and investigate its role in differentiation of symptomatic and asymptomatic CM1.METHODS:
One-hundred fifty-six patients were divided into two groups based on caudal displacement of cerebellar tonsils CM1 (Group I) and non-CM1 (Group II). Group I was subclassified as symptomatic and asymptomatic by a neurosurgeon. Two radiologists evaluated TBS and cerebrospinal fluid flow abnormality.RESULTS:
All subjects presenting TBS had CM1. Difference in presence of TBS between Group I and Group II was highly significant (P<.001).Grading of TBS in symptomatic patients was significantly higher than that in asymptomatic patients (P<.001).CONCLUSION:
TBS is highly suggestive of CM1 and potentially useful in differentiation of symptomatic and asymptomatic CM1.Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Malformação de Arnold-Chiari
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Imageamento por Ressonância Magnética
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Cerebelo
Tipo de estudo:
Diagnostic_studies
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Evaluation_studies
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Prognostic_studies
Limite:
Adult
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Female
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Humans
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Male
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Middle aged
Idioma:
En
Ano de publicação:
2015
Tipo de documento:
Article