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英文誌(2004-)

Journal of Medical Ultrasonics

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1985 - Vol.12

Vol.12 No.02

Original Article(原著)

(0145 - 0153)

リニア電子スキャン・パルスドップラー複合法による腹部深部動脈血流の定量的測定に関する基礎的検討

Measurement of the Superior Mesenteric Artery Flow Using an Ultrasonic Pulsed Doppler Duplex System

中村 武史1, 森安 史典1, 伴 信之1, 西田 修1, 酒井 正彦1, 内野 治人1, 槇野 久春2, 三宅 健夫2

Takefumi NAKAMURA1, Fuminori MORIYASU1, Nobuyuki BAN1, Osamu NISHIDA1, Masahiko SAKAI1, Haruto UCHINO1, Hisaharu MAKINO2, Takeo MIYAKE2

1京都大学医学部第一内科, 2京都大学医学部老年科

1The First Department of Internal Medicine, Kyoto University, 2The Department of Geriatrics, Kyoto University

キーワード : Ultrasonic Doppler flowmeter, Abdominal artery, Superior mesenteric artery, Blood flow volume, Velocity profile

 The following study was performed for the purpose of non-invasive and quantitative measurement of the blood flow volume in the deep-seated abdominal artery using an ultrasonic pulsed Doppler duplex system.
 The diameter of the human superior mesenteric artery was observed by M-mode.
 The diameter, flow velocity and flow volume in the canine superior mesenteric artery were measured, simultaneously using an electro-magnetic flowmeter and an ultrasonic pulsed Doppler duplex system. On the recording paper, those phasic changes were analysed. A time-average flow was acquired by multiplying the mean cross sectional area by the sum of the velocity integrals from the Doppler spectrum in one minute.
 The change in cross sectional area in the human superior mesenteric artery during one pulse was 13% of the minimum value.
 In the canine superior mesenteric artery, a close similarity among the phasic changes of the diameter, velocity and flow volume was shown. A close correlation was proven between the flow volume values by the electro-magnetic flowmeter and by the pulsed Doppler duplex system.
 The ratio between the values of the blood flow volume by the electro-magnetic flowmeter and that by the ultrasonic duplex system was 0.50 at the top of the systolic phase, 0.67 at the late diastolic phase, and 0.62 in the time-average.
 Applying this method to obtain the time-average flow volume using the ultrasonic duplex system, the blood flow volume of the superior mesenteric artery was measured percutaneously in 23 normal volunteers. The value was 505±189 ml/min (Mean±S.D.).