[Measuring vibrations by laser doppler vibrometry of the human tympanic membrane after stapes fixation].
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.
Stasche
N
N
HNO-Klinik, Klinikum der Universitätsstadt Kaiserslautern.
Baker
A
A
Foth
H J
HJ
Huthoff
C
C
Hörmann
K
K
D005583:Fourier Analysis; D006801:Humans; D017078:Laser-Doppler Flowmetry / Q000295:instrumentation*; D009998:Ossicular Prosthesis; D010040:Otosclerosis / Q000175:diagnosis / Q000503:physiopathology* / Q000601:surgery; D011183:Postoperative Complications / Q000175:diagnosis / Q000503:physiopathology; D012815:Signal Processing, Computer-Assisted; D013199:Stapes / Q000503:physiopathology*; D014432:Tympanic Membrane / Q000503:physiopathology*
Laserdopplervibrometrische Schwingungsmessungen am menschlichen Trommelfell nach Stapesfixierung.