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英文誌(2004-)

Journal of Medical Ultrasonics

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1995 - Vol.22

Vol.22 No.12

Technical Note(技術報告)

(0877 - 0883)

超音波カラードプラ法を用いた速度プロファイルおよび Power Mode プロファイルの評価法
−血管への応用−

Method for Using Color Doppler Signals to Estimate Velocity and Power-Mode Profiles: Application to the Arteries

谷口 信行1, 伊東 紘一1, 宮本 一夫2, 井上 信康2, 若松 立也2, 高野 隆一3, 尾本 きよか1

Nobuyuki TANIGUCHI1, Kouichi ITOH1, Kazuo MIYAMOTO2, Nobuyasu INOUE2, Tatsuya WAKAMATSU2, Ryuichi TAKANO3, Kiyoka OMOTO1

1自治医科大学臨床病理学, 2アロカ, 3自治医科大学腎臓内科

1Department of Clinical Pathology Jichi Medical School, 2Aloka Co., 3Department of Nephrology Jichi Medical School

キーワード :

We developed a method for presenting a velocity profile of a blood flow by modifying an ordinary ultrasonographic apparatus to enable it to measure flow velocity with color-Doppler signals. Conventional pulsed-Doppler methods, employing multi-gate laser Doppler, hot film, or nuclear magnetic resonance, require an apparatus designed specifically for the purpose; they are also time-consuming and require expertise. Temporal resolution was 40 to 100 msec, depending on the frame rate of the color-Doppler images. One profile can be produced several seconds after freezing the color-Doppler image. Velocity-mode profiles of the common carotids and abdominal aorta were of a central flat pattern, not of the parabolic pattern reported in previous studies. Flow velocity in the common hepatic artery was faster in the outer than in the inner stream, probably because of arterial curvature. The present method can also provide a power-mode profile of a blood flow, although the clinical significance of this profile remains to be elucidated. This method can be used to assess blood flow in diseased arteries as well as in the venous system.