Otoscopic Investigations by Holographic Interferometry: A Fiber Endoscopic Approach Using a Pulsed Ruby Laser System

  • G. von Bally
Conference paper
Part of the Springer Series in Optical Sciences book series (SSOS, volume 31)


Otoscopy, as the name implies, deals with the visual inspection of the ear, especially the middle ear. Our research group is involved in this field, since we are interested in a holographic analysis of the vibration patterns of the eardrum in man. Our interest in such an analysis is caused by its cabability to investigate the sound transfer function of the middle ear, as well as to follow up healing processes after tympanoplastic surgery, and to provide the possibility of a differential diagnosis of disorders in the middle ear mechanics without the necessity to open the tympanic cavity surgically. The latter can be accomplished by comparison of “regular” and “pathological” patterns of tympanic membrane vibrations as could be proved by inestigations in man in vitro [1] as well as in vivo [2].


Tympanic Membrane Reference Beam Speckle Noise Ruby Laser Holographic Interferometry 
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    VON BALLY, G.: in: E. Marom and A.A. Friesem (eds.): Applications of ho- lography and optical data processing, Pergamon Press (1977), 593–602.Google Scholar
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    VON BALLY, G.: in: G. von Bally (ed.): Holography in Medicine and Biology, Springer Series in Optical Sciences, Vol. 18 ( Springer, Berlin, Heidelberg, New York 1979 ) pp. 198–205CrossRefGoogle Scholar
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Copyright information

© Springer-Verlag Berlin Heidelberg 1982

Authors and Affiliations

  • G. von Bally
    • 1
  1. 1.Medical Acoustics and Biophysics LaboratoryUniversity of Münster, Ear-Nose-Throat-ClinicMünsterFed. Rep. of Germany

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