Web-based Calibration of Observers Using MRI of the Temporomandibular Joint

Overview

Journal Dentomaxillofac Radiol

Publisher Oxford University Press

Date 2012 May 5

PMID 22554988

Citations 1

Authors

K Hellen-Halme

L Hollender

M Janda

A Petersson

Affiliations

Soon will be listed here.

Abstract

Objectives: Research diagnostic criteria for temporomandibular disorders (RDC/TMDs) were proposed in 1992 with the aim of standardizing and testing methods for diagnosing TMDs. RDC/TMDs have so far been lacking standardized methods for imaging and criteria for imaging diagnosis of disorders of the temporomandibular joint (TMJ). Criteria for disorders of the TMJ have recently been proposed for MRI. The aim of this study was to publish MR images of the TMJ on the web and to test the agreement of five observers using the criteria.

Methods: 20 cases of MRI of the TMJ were published on the web together with the criteria. The MR images were taken in closed and open mouth positions, and sagittal and coronal views. Five observers diagnosed disc position, disc shape, joint effusion and loose calcified bodies in the TMJ.

Results: In all cases except one, three or more observers agreed upon the diagnosis. All agreed on whether a loose calcified body was present or not. The second best agreement was obtained for disc position in the sagittal view, where all observers agreed in 16 of the 20 cases. For disc position in the coronal view and the evaluation of the disc shape, observer agreement was lower.

Conclusion: Criteria were useful in order to standardize and simplify evaluation and thereby probably increase the diagnostic outcome among different observers for MRI of the TMJ. We recommend that the criteria be used internationally to facilitate comparisons between different studies.

Citing Articles

Fracture of the articular disc in the temporomandibular joint: two case reports.

An S, Jung J Dentomaxillofac Radiol. 2014; 44(2):20140218.

PMID: 25308829 PMC: 4614171. DOI: 10.1259/dmfr.20140218.

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