Abstract
We are developing an advanced computer-controlled digital optoelectronic holographic system (DOEHS) with the ability to measure both shape and acoustically induced deformations of the tympanic membrane of several species, including humans. The DOEHS is to be deployed for use in the clinic.
The clinical environment presents numerous challenges such as disturbances due to patient’s heartbeat, breathing, patient’s tremor as well as environmentally induced mechanical vibrations of several orders of magnitude larger (1–10 Hz, 0.1–10 μm) than the nanometer measuring resolution of the system. Design and optimization of the system for clinical use includes the development of a mechatronic otoscope positioner (MOP) system that allows for the interferometric otoscope head (OH) to be easily positioned near a patient’s ear by an examiner and autonomously maintain mechanical stability during the duration of holographic measurements. In addition, we are also developing and implementing various acquisition strategies and algorithms for minimization of measurement disturbances in clinical conditions.
The deployment and use of the MOP in a clinical environment allows for a large versatility of measurements while providing a wide range of completely new type of information regarding the properties of the TM and the state of a patients’ hearing. The system will greatly help improve the quality of the treatments applied to the human middle-ear.
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Acknowledgements
This work has been funded by the National Institute on Deafness and Other Communication Disorders (NIDCD), the National Institute of Health (NIH), the Massachusetts Eye and Ear Infirmary (MEEI), and the Mittal Fund. The authors also gratefully acknowledge the support of the NanoEngineering, Science, and Technology (NEST) program at the Worcester Polytechnic Institute, Mechanical Engineering Department. We would like to acknowledge our colleagues – J. M. Flores Moreno, E. J. Harrington and C. Scarpino, for their support during the developments presented in this paper.
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Dobrev, I., Harrington, E.J., Cheng, T., Furlong, C., Rosowski, J.J. (2013). Digital Holographic Otoscope for Measurements of the Human Tympanic Membrane In-Vivo. In: Jin, H., Sciammarella, C., Furlong, C., Yoshida, S. (eds) Imaging Methods for Novel Materials and Challenging Applications, Volume 3. Conference Proceedings of the Society for Experimental Mechanics Series. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-4235-6_5
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DOI: https://doi.org/10.1007/978-1-4614-4235-6_5
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