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  • Title: [Measuring vibrations by laser doppler vibrometry of the human tympanic membrane after stapes fixation].
    Author: Stasche N, Baker A, Foth HJ, Huthoff C, Hörmann K.
    Journal: Laryngorhinootologie; 1994 Jul; 73(7):353-7. PubMed ID: 7916778.
    Abstract:
    At times preoperative diagnosis of otosclerosis can prove difficult. Even the objective measurement of the stapes reflex is not very conclusive in patients suffering from more severe hearing loss. Laser-Doppler vibrometry measures the velocity or amplitude of the tympanic membrane (umbo) vibrations. Laser-Doppler vibrometry has a sensitivity that is highly by the factor 10(4) than tympanometry. The herewith presented examinations show, that there is a correlation between the frequency patterns of the displacement amplitudes and experimentally simulated otosclerosis.
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