منابع مشابه
Analysis of the Middle-Ear Function. Part I: Input Impedance
A quantitative theory of the middle-ear acoustics i developed and expressed interms of an electric analog. The analog network is based on the functional anatomy of the middle ear. The numerical values of its elements are derived from impedance measurements on normal and pathological ears and from anatomical data. It is shown that the input impedance of the analog agrees within the experimental ...
متن کاملNon-invasive estimation of middle-ear input impedance and efficiency.
A method to transform the impedance measured in the ear canal, ZEC, to the plane of the eardrum, ZED, is described. The portion of the canal between the probe and eardrum was modeled as a concatenated series of conical segments, allowing for spatial variations in its cross-sectional area. A model of the middle ear (ME) and cochlea terminated the ear-canal model, which permitted estimation of ME...
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Objectives: The aim of this study was to compare the otitis media with effusion (OME) groups that improved when treated with adenoidectomy and Ventilation Tube (VT), to the group of the recurred after surgery and detect the possible role of allergy in OME. Material and Methods: This study was performed on two groups. The Patient group consisted of 38 patients with recurrent OME with allergy an...
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Serios otitis media is one of those ear Troubles that has enjoyed a very extensive research two decaides. I ts recognition in medical literature goes b,ick tc eighteenth century. Since then there has been rather little progress in this field. The discovery of antibiotcs and thence lessening of in fecticus ear diseases, attention has been paid to preserve the function of ear, and naturally...
متن کاملCLASSIFICATION OF CONGENITAL MIDDLE AND EXTERNAL EAR MALFORMATIONS: CT STUDY
The authors used high-resolution computed tomography (HRCT) for studying 52 congenitally malformed ears in 45 children between five and 10 years of age. In six children the malformations were bilateral. The malformations clinically manifested as microtia, atresia of the external auditory canal and conductive deafness. Analyzing anatomical details and pathological changes on HRCT axial sec...
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ژورنال
عنوان ژورنال: AUDIOLOGY JAPAN
سال: 1993
ISSN: 1883-7301,0303-8106
DOI: 10.4295/audiology.36.74