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Assessment of middle ear disease in the dog: a comparison of diagnostic imaging modalities
1Division of Companion Animal Studies, University of Glasgow, Bearsden Road, Bearsden, Glasgow G61 1QH, UK.
Objectives:
To compare radiography and ultrasound for the assessment of the tympanic bulla against computed tomography results.
Methods:
Thirty-one dogs had dorsoventral, left and right lateral oblique and rostrocaudal open mouth radiographs compared with ultrasound images and computed tomography scans of the tympanic bullae.
Results:
Radiography was superior to ultrasonography for the evaluation of the middle ear. However, computed tomography assessment was best predicted by a combination of radiographic and ultrasonographic findings.
Clinical Significance:
A combination of radiography and ultrasound can provide a more accurate assessment of the bulla than either of them alone. Ultrasound may have a role in the evaluation of middle ear disease in the dog. Results are operator dependent and not reproducible with current recording techniques.
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