3D digital holographic interferometry as a tool to measure the tympanic membrane motion

M. del Socorro Hernández-Montes; S. Muñoz Solis; F. Mendoza Santoyo

doi:10.1117/12.978227

11 September 2012 3D digital holographic interferometry as a tool to measure the tympanic membrane motion

M. del Socorro Hernández-Montes, S. Muñoz Solis, F. Mendoza Santoyo

Proceedings Volume 8413, Speckle 2012: V International Conference on Speckle Metrology; 84131A (2012) https://doi.org/10.1117/12.978227
Event: SPECKLE 2012: V International Conference on Speckle Metrology, 2012, Vigo, Spain

Abstract

Most of the current optical non-invasive methodologies used to characterize the tympanic membrane (TM) motion generate data in the z direction only, i.e., employ an out-of-plane sensitive configuration. In this paper, 3-D digital holographic interferometry (3-D DHI), is used to measure micrometer displacements from the TM surface. The proposed optical configuration provides information from three sensitivity vectors that separate the contributions from x, y and z displacement components. In order to achieve high accuracy of the sensitivity vector and to obtain the complete determination of the 3-D TM displacements, its surface contour is obtained by moving only two object illumination sources chosen from any pair within the DHI optical setup. Results are presented from measurements corresponding to individual displacements maps for the three orthogonal displacements components x, y and z combined with the TM shape from an ex-vivo cat. These results will no doubt contribute to enhance the understanding and determinate the mechanical properties of this complex tissue.

Citation Download Citation

M. del Socorro Hernández-Montes, S. Muñoz Solis, and F. Mendoza Santoyo "3D digital holographic interferometry as a tool to measure the tympanic membrane motion", Proc. SPIE 8413, Speckle 2012: V International Conference on Speckle Metrology, 84131A (11 September 2012); https://doi.org/10.1117/12.978227

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