Ultrasound assessment of increased capsular width as a predictor of temporomandibular joint effusion.
Dentomaxillofac Radiol
; 32(6): 359-64, 2003 Nov.
Article
en En
| MEDLINE
| ID: mdl-15070837
ABSTRACT
OBJECTIVES:
The aim of this study was to evaluate whether an increased capsular width evidenced by ultrasound (US) could be an indirect marker of temporomandibular joint (TMJ) effusion.METHODS:
138 TMJs were evaluated by US and magnetic resonance imaging (MRI) by two blinded calibrated investigators. US measures of capsular width (in mm) and MRI diagnosis of TMJ effusion (presence/absence) were used to perform a receiver operating characteristic (ROC) curve analysis in order to assess the most accurate cut-off value of capsular width that was able to discriminate between joints with and without MRI effusion.RESULTS:
Diagnostic accuracy of US to detect MRI-depicted TMJ effusion was good (area under the ROC curve=0.817). US sensitivity was high for values below the cut-off value of 1.950 mm (true positive rate (TPR)=83.9%; false positive rate (FPR)=26.3%), while specificity was high for values above the cut-off value of 2.150 mm (TPR=71.0%; FPR=11.8%).CONCLUSIONS:
Analysis of ROC curve appears to reveal that the critical area is around the 2 mm value for TMJ capsular width. These findings need to be refined by further studies assessing the smallest detectable difference in capsular width, with attention to reliability of interobserver observations.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Líquido Sinovial
/
Articulación Temporomandibular
/
Cápsula Articular
Tipo de estudio:
Clinical_trials
/
Diagnostic_studies
/
Prognostic_studies
/
Risk_factors_studies
Límite:
Humans
Idioma:
En
Revista:
Dentomaxillofac Radiol
Año:
2003
Tipo del documento:
Article
País de afiliación:
Italia