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Journal of Biomedical Optics

Extratympanic observation of middle ear structure using a refractive index matching material (glycerol) and an infrared camera
Author(s): Soo-Keun Kong; Kyong-Myong Chon; Eui-Kyung Goh; Il-Woo Lee; Soo-Geun Wang
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Paper Abstract

High-resolution computed tomography has been used mainly in the diagnosis of middle ear disease, such as high-jugular bulb, congenital cholesteatoma, and ossicular disruption. However, certain diagnoses are confirmed through exploratory tympanotomy. There are few noninvasive methods available to observe the middle ear. The purpose of this study was to investigate the effect of glycerol as a refractive index matching material and an infrared (IR) camera system for extratympanic observation. 30% glycerol was used as a refractive index matching material in five fresh cadavers. Each material was divided into four subgroups; GN (glycerol no) group, GO (glycerol out) group, GI (glycerol in) group, and GB (glycerol both) group. A printed letter and middle ear structures on the inside tympanic membrane were observed using a visible and IR ray camera system. In the GB group, there were marked a transilluminated letter or an ossicle on the inside tympanic membrane. In particular, a footplate of stapes was even transilluminated using the IR camera system in the GB group. This method can be useful in the diagnosis of diseases of the middle ear if it is clinically applied through further studies.

Paper Details

Date Published: 7 May 2014
PDF: 5 pages
J. Biomed. Opt. 19(5) 055003 doi: 10.1117/1.JBO.19.5.055003
Published in: Journal of Biomedical Optics Volume 19, Issue 5
Show Author Affiliations
Soo-Keun Kong, Pusan National Univ. (Korea, Republic of)
Kyong-Myong Chon, Pusan National Univ. (Korea, Republic of)
Eui-Kyung Goh, Pusan National Univ. (Korea, Republic of)
Il-Woo Lee, Pusan National Univ. (Korea, Republic of)
Soo-Geun Wang, Pusan National Univ. (Korea, Republic of)


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