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Proceedings Paper

Influence of middle ear pressure alteration and middle ear effusion on vibration characteristics of human tympanic membrane
Author(s): Norbert Stasche; Karl Hoermann; Hans-Jochen Foth; Frank Bernecker; Thomas G. Barton
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Paper Abstract

A laser doppler vibrometer was used to measure the motion of a simple middle ear model and tympanic membrane vibrations of human temporal bone specimen. Different pathological conditions were simulated: Increasing or decreasing middle ear pressure to defined levels create a situation similar to a barootitis. Additionally the middle ear cavities were partially or totally filled with fluids of different viscosities. Characteristic changes of the vibration patterns were detected: With increasing pressure difference between middle ear and atmosphere the vibration amplitudes decreased. In middle ear effusions diminished amplitudes were obtained, depending on the fluid-occupied volume within the tympanic cavity. The vibration pattern was not influenced by differences in the viscosity of the effusion. Therefore a preoperative examination of a patient with middle ear effusions by laser doppler vibrometer offers no predictive aspect to the decision whether a ventilation tube should be inserted or not.

Paper Details

Date Published: 12 May 1995
PDF: 8 pages
Proc. SPIE 2395, Lasers in Surgery: Advanced Characterization, Therapeutics, and Systems V, (12 May 1995); doi: 10.1117/12.209109
Show Author Affiliations
Norbert Stasche, Klinikum Kaiserslautern (Germany)
Karl Hoermann, Univ. Hospital Mannheim (Germany)
Hans-Jochen Foth, Univ. Kaiserslautern (Germany)
Frank Bernecker, Klinikum Kaiserslautern (Germany)
Thomas G. Barton, Univ. Kaiserslautern (Germany)

Published in SPIE Proceedings Vol. 2395:
Lasers in Surgery: Advanced Characterization, Therapeutics, and Systems V
R. Rox Anderson; Graham M. Watson; Rudolf W. Steiner; Douglas E. Johnson; Stanley M. Shapshay; Michail M. Pankratov; George S. Abela; Lawrence S. Bass; John V. White; Rodney A. White; Kenneth Eugene Bartels; Lloyd P. Tate; C. Thomas Vangsness, Editor(s)

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