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Proceedings Paper

A compact structured light based otoscope for three dimensional imaging of the tympanic membrane
Author(s): Anshuman J. Das; Julio C. Estrada; Zhifei Ge; Sara Dolcetti; Deborah Chen; Ramesh Raskar
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Paper Abstract

Three dimensional (3D) imaging of the tympanic membrane (TM) has been carried out using a traditional otoscope equipped with a high-definition webcam, a portable projector and a telecentric optical system. The device allows us to project fringe patterns on the TM and the magnified image is processed using phase shifting algorithms to arrive at a 3D description of the TM. Obtaining a 3D image of the TM can aid in the diagnosis of ear infections such as otitis media with effusion, which is essentially fluid build-up in the middle ear. The high resolution of this device makes it possible examine a computer generated 3D profile for abnormalities in the shape of the eardrum. This adds an additional dimension to the image that can be obtained from a traditional otoscope by allowing visualization of the TM from different perspectives. In this paper, we present the design and construction of this device and details of the imaging processing for recovering the 3D profile of the subject under test. The design of the otoscope is similar to that of the traditional device making it ergonomically compatible and easy to adopt in clinical practice.

Paper Details

Date Published: 26 February 2015
PDF: 16 pages
Proc. SPIE 9303, Photonic Therapeutics and Diagnostics XI, 93031F (26 February 2015); doi: 10.1117/12.2079761
Show Author Affiliations
Anshuman J. Das, Massachusetts Institute of Technology (United States)
Julio C. Estrada, Massachusetts Institute of Technology (Mexico)
Zhifei Ge, Massachusetts Institute of Technology (United States)
Sara Dolcetti, Massachusetts Institute of Technology (United States)
Deborah Chen, Massachusetts Institute of Technology (United States)
Ramesh Raskar, Massachusetts Institute of Technology (United States)

Published in SPIE Proceedings Vol. 9303:
Photonic Therapeutics and Diagnostics XI
Hyun Wook Kang; Brian J. F. Wong M.D.; Melissa C. Skala; Bernard Choi; Guillermo J. Tearney M.D.; Andreas Mandelis; Nikiforos Kollias; Kenton W. Gregory M.D.; Mark W. Dewhirst D.V.M.; Justus F. Ilgner M.D.; Alfred Nuttal; Haishan Zeng; Laura Marcu; Claus-Peter Richter, Editor(s)

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