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Establishment of normative cochlear and vestibular measurements to aid in the diagnosis of inner ear malformations

Establishment of normative cochlear and vestibular measurements to aid in the diagnosis of inner ear malformations 106th Annual Meeting of the American-Academy-of-Otolaryngology-Head-and-Neck-Surgery Purcell, D., Johnson, J., Fischbein, N., Lalwani, A. K. MOSBY-ELSEVIER. 2003: 78–87

Abstract

We sought to establish normative measurements of the inner ear using computed tomography (CT) of the temporal bone to aid in the diagnosis of inner ear malformations.Prospective measurements of the inner ear structures were made on axial and coronal temporal bone CT scans on 15 patients with normal hearing and 15 patients with sensorineural hearing loss.The vertical height of the cochlea on coronal scan and the size of the central bony island within the lateral semicircular canal on axial scan along with visual inspection identified 7 inner ear abnormalities in 6 patients: 5 cases of lateral semicircular canal dysplasia and 2 cases of cochlear hypoplasia. In contrast, visual inspection alone identified only 4 of the 7 abnormalities.Routine measurement of the cochlear height and bony island of the lateral semicircular canal, in conjunction with visual inspection of CT images, will increase recognition of common inner ear malformations.

View details for DOI 10.1067/mhn.2003.51

View details for Web of Science ID 000180856500014

View details for PubMedID 12574763