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October 1965

Vestibular Changes Following Ultrasonic Irradiation

Author Affiliations

From the Research Department of the New York Eye and Ear Infirmary.

Arch Otolaryngol. 1965;82(4):365-375. doi:10.1001/archotol.1965.00760010367006

Introduction  THE ULTRASONIC irradiation of the vestibular labyrinth has been a useful procedure for the control of Meniere's disease (Arslan,1 Altmann and Waltner,2 Ironside and Lindsay,3 James,4 Basek5). Arslan showed in a statistical study that the preservation of hearing is not only a theoretical consideration but a practical goal. He has shown, by the usual labyrinthine tests, that in the majority of cases, six months following surgery, the labyrinth is either destroyed or hypoactive.The principal characteristics of ultrasound vibrations are (1) the propagation of ultrasound follows a straight line, whereas audible sound waves spread in a spherical form; (2) the propagation requires a liquid or solid medium; (3) the vibrations are absorbed by an air barrier; and (4) the absorption coefficient of ultrasound vibrations for living tissue is in direct proportion to the increase of frequency.Brain et al,6 using the cat as

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