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英文誌(2004-)

Journal of Medical Ultrasonics

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1995 - Vol.22

Vol.22 No.02

Original Article(原著)

(0139 - 0146)

心臓疾患の非侵襲的診断を目指した超音波ドプラによる心臓壁微小振動の解析

Analysis of Small Vibrations on the Heart Wall Measured by Ultrasonic Doppler for Noninvasive Diagnosis of Cardiac Muscle Dysfunction

佐藤 宏明1, 金井 浩1, 中鉢 憲賢1, 小岩 喜郎2

Hiroaki SATOH1, Hiroshi KANAI1, Noriyoshi CHUBACHI1, Yoshiro KOIWA2

1東北大学工学部, 2東北大学医学部

1Faculty of Engineering Tohoku University, 2Tohoku University School of Medicine

キーワード : Cardiomyopathy, Small Vibration of the Heart Wall, Ultrasonic Doppler system

To diagnose ventricular dysfunction based on acoustic characteristics of the heart muscle, it is necessary to measure small vibration signals from various parts of the ventricular walls noninvasively. We previously proposed a noninvasive method for measuring these vibrations using Doppler ultrasonography. Here we present the spectra of the small vibration signals from the heart wall that we obtained using this method. Clear differences between the resultant power spectra of the small vibration signals measured on the interventricular septum in normal individuals and those of patients who had been receiving carcinostatic medication for a long time were observed. This study thus confirms the potential usefulness of the new method proposed for measuring small vibration signals on the heart wall.