雑誌文献を検索します。書籍を検索する際には「書籍検索」を選択してください。

検索

書誌情報 詳細検索 by 医中誌

pp.719-726
Published Date 1957/9/20
DOI https://doi.org/10.11477/mf.1492201854

Yamada finds that, by means of selectoject, the tone of auditory tube catherterization to be including to a considerable extent the tones that may be up to 2000 cps. At this tonal frequency it may be easily influenced by external variables such as caliber diffe-rences of eustachian tubes, a factor which for diagnostic auscultation in catherterization may become highly important. It is revealed, however, the otoscopes employing the usual gummy material for their construction have a tendency to absorb tones whose frequency range above 800 cps. And, in order to avoid this difficulty as technical drawbacks, the use vinyl plastics that allow passage of tones up to 2,000 cps.without hinderance is highly recommended by the author for the material in the construction of the instrument.


Copyright © 1957, Igaku-Shoin Ltd. All rights reserved.

基本情報

電子版ISSN 印刷版ISSN 0386-9679 医学書院

関連文献

もっと見る

文献を共有