パルスドプラ法による嚥下機能検査法(第一報) Evaluation of Swallowing Function by Pulsed Doppler Ultrasound Investigation (Preliminary Report)

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In this study we suggest that the velocity of water entering the cervical esophagus can be used as an index of pharyngeal swallowing function. In this article, the basic in vitro principles of water and viscous water flow velocity evaluation using ultrasonic methods are introduced. Water flow involving small gas bubbles passing through a silicon tube could be monitored in the B-mode images and the flow velocity could be measured by Doppler shift spectra produced by a medical ultrasound imaging (GE YOKOGAWA LOGIQ500 and linear convex probe 739L). By an in vitro experiment, we confirmed that the maximum water flow velocity (Vmax) obtained from Doppler shift spectra and actually measured water flow velocity showed a high correlation. The maximum velocity of viscous water flow measured from Doppler shift spectra and actually measured viscous water flow velocity also showed a high correlation.<br>We measured Doppler spectra of water flow speed through the cervical esophagus of five subjects (two male, 41-50 y. o; three females, 28-42 y. o) without dysphasia 10 times and examined the coefficient of variation of Vmax. Values of the coefficient variation of Vmax were 3.4, 3.8, 8.8, 12.7, 15.5% (median 8.8%). It seemed that Vmax could be used as an index of the speed of water flow during swallowing. We suggest that the Doppler spectra of water flow speed through the cervical esophagus in swallowing analysis may be useful for assessing pharyngeal swallowing function, and that it may be useful in the diagnosis of pharyngeal swallowing disorders.

収録刊行物

  • 耳鼻咽喉科臨床  

    耳鼻咽喉科臨床 99(8), 669-677, 2006-08-01 

    The Society of Practical Otolaryngology

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各種コード

  • NII論文ID(NAID)
    10018228641
  • NII書誌ID(NCID)
    AN00107089
  • 本文言語コード
    JPN
  • 資料種別
    NOT
  • ISSN
    00326313
  • NDL 記事登録ID
    8058725
  • NDL 雑誌分類
    ZS43(科学技術--医学--耳鼻咽喉科学)
  • NDL 請求記号
    Z19-421
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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