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Research Papers

Optoelectronic holographic otoscope for measurement of nano-displacements in tympanic membranes

[+] Author Affiliations
Maria del Socorro Hernández-Montes

Worcester Polytechnic Institute, Department of Mechanical Engineering and Center for Holographic Studies and Laser micro-mechaTronics, Worcester, Massachusetts 21202 and Centro de Investigaciones en Óptica, A. C., Loma del bosque 115, León, Guanajuato 37150, México

Cosme Furlong

Massachusetts Eye and Ear Infirmary, Eaton-Peabody Laboratory, Boston, Massachusetts 02114 and Massachusetts Institute of Technology, Harvard Division of Health Sciences and Technology, Speech and Hearing Bioscience and Technology Program, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139 and Worcester Polytechnic Institute, Center for Holographic Studies and Laser micro-mechaTronics and Department of Mechanical Engineering, Worcester, Massachusetts 21202

John J. Rosowski

Massachusetts Eye and Ear Infirmary, Eaton-Peabody Laboratory, Boston, Massachusetts 02114 and Harvard Medical School, Department of Otology and Laryngology, Boston, Massachusetts 02114 and Massachusetts Institute of Technology, Harvard Division of Health Sciences and Technology, Speech and Hearing Bioscience and Technology Program, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139

Nesim Hulli, Ellery Harrington

Worcester Polytechnic Institute, Department of Mechanical Engineering and Center for Holographic Studies and Laser micro-mechaTronics, Worcester, Massachusetts 21202

Jeffrey Tao Cheng, Michael E. Ravicz

Massachusetts Eye and Ear Infirmary, Eaton-Peabody Laboratory, Boston, Massachusetts 02114 and Harvard Medical School, Department of Otology and Laryngology, Boston, Massachusetts 02114

Fernando Mendoza Santoyo

Centro de Investigaciones en Óptica, A. C., Loma del bosque 115, León, Guanajuato 37150, México

J. Biomed. Opt. 14(3), 034023 (June 17, 2009). doi:10.1117/1.3153898
History: Received December 10, 2008; Revised March 31, 2009; Accepted April 03, 2009; Published June 17, 2009
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Current methodologies for characterizing tympanic membrane (TM) motion are usually limited to either average acoustic estimates (admittance or reflectance) or single-point mobility measurements, neither of which suffices to characterize the detailed mechanical response of the TM to sound. Furthermore, while acoustic and single-point measurements may aid in diagnosing some middle-ear disorders, they are not always useful. Measurements of the motion of the entire TM surface can provide more information than these other techniques and may be superior for diagnosing pathology. We present advances in our development of a new compact optoelectronic holographic otoscope (OEHO) system for full field-of-view characterization of nanometer-scale sound-induced displacements of the TM surface at video rates. The OEHO system consists of a fiber optic subsystem, a compact otoscope head, and a high-speed image processing computer with advanced software for recording and processing holographic images coupled to a computer-controlled sound-stimulation and recording system. A prototype OEHO system is in use in a medical research environment to address basic science questions regarding TM function. The prototype provides real-time observation of sound-induced TM displacement patterns over a broad frequency range. Representative time-averaged and stroboscopic holographic interferometry results in animals and human cadaver samples are shown, and their potential utility is discussed.

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© 2009 Society of Photo-Optical Instrumentation Engineers

Citation

Maria del Socorro Hernández-Montes ; Cosme Furlong ; John J. Rosowski ; Nesim Hulli ; Jeffrey Tao Cheng, et al.
"Optoelectronic holographic otoscope for measurement of nano-displacements in tympanic membranes", J. Biomed. Opt. 14(3), 034023 (June 17, 2009). ; http://dx.doi.org/10.1117/1.3153898


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