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英文誌(2004-)

Journal of Medical Ultrasonics

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1995 - Vol.22

Vol.22 No.06

Original Article(原著)

(0455 - 0460)

心筋内パルスドプラ法による健常者左室壁運動評価の試み:心尖部アプローチによる検討

Evaluation of Normal Ventricular Wall Motion by Intramyocardial Pulsed Doppler Echocardiography: Assessment From the Apical Window

桐谷 博巳1, 羽田 勝征2, 伊藤 敦彦2, 田宮 栄治2, 清水 達也2, 戸兵 雄子2

Hiromi KIRITANI1, Yoshiyuki HADA2, Nobuhiko ITOH2, Eiji TAMIYA2, Tatsuya SHIMIZU2, Yuko TOHYO2

1JR東京総合病院臨床検査科, 2JR東京総合病院循環器内科

1Clinical Laboratory, JR Tokyo General Hospital, 2Department of Cardiology, JR Tokyo General Hospital

キーワード : Apical approach, Doppler tissue imaging, Echocardiography, Left ventricular wall motion, Mitral inflow

To investigate the longitudinal motion of the left ventricle, we performed Doppler tissue imaging and intramyocardial pulsed Doppler echocardiography in 32 normal subjects aged 39±14 (SD) years. Intramyocardial velocities were recorded at the lower or papillary, middle or chordal, and upper or mitral levels of the interventricular septum and the posterior wall in the apical long-axis view. The entire left ventricle moved toward the transducer (coded in red) during systole and moved away (coded in blue) during diastole, except for part of the apex that moved in the opposite direction. The systolic (S), early diastolic (E), and presystolic (A) waves were recorded using ultrasonography. All three waves of the septum and the posterior wall were significantly higher toward the mitral annulus. S and E waves were lower in the septum than in the posterior wall. A/E values of the left ventricular walls correlated closely with A/E values of mitral inflow as well as with age.
This new method may provide insight into assessment of global or localized left ventricular myocardial function.