Online Journal
電子ジャーナル
IF値: 0.677(2017年)→0.966(2018年)

英文誌(2004-)

Journal of Medical Ultrasonics

一度このページでloginされますと,Springerサイト
にて英文誌のFull textを閲覧することができます.

cover

1985 - Vol.12

Vol.12 No.01

Original Article(原著)

(0055 - 0061)

末梢および臓器循環の超音波による診断—肝血流—

Analysis of the Hepatic Hemodynamics Using an Ultrasonic Duplex System

森安 史典, 西田 修, 伴 信之, 中村 武史, 内野 治人

Fuminori MORIYASU, Osamu NISHIDA, Nobuyuki BAN, Takefumi NAKAMURA, Haruto UCHINO

京都大学医学部第一内科

The First Department of Internal Medicine, Faculty of Medicine, Kyoto University

キーワード : Ultrasonic Doppler flowmeter, Portal blood flow, Portal hypertention, Portal vascular resistance, Hepatic hemodynamics

 Applications of an ultrasonic duplex system on measurement of the hepatic circulation, especially of the portal circulation have been developed. Portal blood flow can be calculated from the cross-sectional area and the mean blood flow velocity. In patients with portal hypertension, the cross-sectional area of the portal vein is larger than normal, and the blood flow velocity of the portal vein is lower than normal. However, the blood flow volume of the portal vein is well maintained in portal hypertensive patients in spite of development of the porto-systemic collateral pathways. We called the ratio of the cross-sectional area to the blood flow velocity of the portal vein the "Congestion Index (C.I.)" of tne portal vein. In portal hypertensive patients, the C.I. value is significantly larger than normal.
 The portal vascular resistance can be calculated from the portal perfusion pressure and the portal blood flow, both of which are measured simultaneously and percutaneously. The measurement of the portal vascular resistance is useful for diagnosis of pathophysiology of the hepatic hemodynamics.