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CT screening for temporal bone abnormalities in idiopathic bilateral sensorineural hearing loss

Published online by Cambridge University Press:  29 June 2007

J. P. Harcourt ,
P. Lennox ,
P. D. Phelps  and
G. B. Brookes
J. P. Harcourt
Affiliation:
Royal National Throat, Nose and Ear Hospital, Gray's Inn Road, London, UK.
P. Lennox
Affiliation:
Royal National Throat, Nose and Ear Hospital, Gray's Inn Road, London, UK.
P. D. Phelps
Affiliation:
Royal National Throat, Nose and Ear Hospital, Gray's Inn Road, London, UK.
G. B. Brookes*
Affiliation:
Royal National Throat, Nose and Ear Hospital, Gray's Inn Road, London, UK.
*
Address for correspondence: Gerald B. Brookes, F.R.C.S., Consultant ENT and Neuro-Otological Surgeon, Royal National Throat, Nose and Ear Hospital, Gray's Inn Road, London WC1X 8DA.
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Abstract

Bilateral sensorineural hearing loss can be caused by a variety of temporal bone abnormalities including primary cochlear otoscierosis, local and systemic bony diseases and some metabolic conditions. These may be identified using computerized tomography (CT), with attenuation recordings taken across the cochlear capsule (CT densitometry). Eighty patients with bilateral sensorineural hearing loss were screened over a period of six and a half years using this technique, and only three cases (3.8 per cent) of treatable disease were detected. Positive yields may be increased by screening selected cases with other clinical or biochemical stigmata of temporal bone disease.

Keywords

TomographyX-ray computedHearing losssensorineuralTemporal bone
Type
Main Articles
Information
The Journal of Laryngology & Otology , Volume 111 , Issue 2 , February 1997 , pp. 117 - 121
Copyright
Copyright © JLO (1984) Limited 1997

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