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首页> 外文期刊>Japanese journal of applied physics >Local two-dimensional distribution of propagation speed of myocardial contraction for ultrasonic visualization of contraction propagation
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Local two-dimensional distribution of propagation speed of myocardial contraction for ultrasonic visualization of contraction propagation

机译：局部二维分布心肌收缩速率对收缩传播的超声波可视化

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摘要

The propagation of myocardial contraction caused by the conduction of electrical excitation in the heart has been visualized in our previous study. However, it was assumed that the contraction propagated parallel to the heart wall and the propagation speed was constant within the measurement area. In the present study, we estimated the two-dimensional propagation speed of contraction at each local area by ultrasonic measurement, and examined the mechanism of the contraction propagation in the heart by calculating the spatial distribution of the propagation speed vectors. By applying the proposed method to the interventricular septum of the human heart, the propagation speed in the lateral direction was approximately 1.6 times faster than that in the beam direction. The significant difference in propagation speeds between the specialized and ordinary myocardia was detected successfully. This study suggests that the proposed method can detect the myocardial ischemic and arrhythmia regions non-invasively. (C) 2019 The Japan Society of Applied Physics
机译：在我们以前的研究中，心脏激发导电引起的心肌收缩繁殖已经在观察中被视为。然而，假设平行于心脏壁传播的收缩和传播速度在测量区域内恒定。在本研究中，我们通过超声测量估计每个局部区域的收缩的二维传播速度，通过计算传播速度矢量的空间分布来检查心脏中收缩传播的机制。通过将所提出的方法施加到人体的间隔内隔，横向的传播速度比光束方向上的速度快约1.6倍。成功地检测到专业和普通心肌之间的传播速度的显着差异。本研究表明，该方法可以非侵入地检测心肌缺血性和心律失常区域。 （c）2019年日本应用物理学会

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  • 来源
    《Japanese journal of applied physics》 |2019年第sg期|SGGE05.1-SGGE05.7|共7页
  • 作者

    Hayashi Akane; Mori Shohei; Arakawa Mototaka; Kanai Hiroshi;

  • 作者单位

    Tohoku Univ Grad Sch Biomed Engn Sendai Miyagi 9808579 Japan;

    Tohoku Univ Grad Sch Engn Sendai Miyagi 9808579 Japan;

    Tohoku Univ Grad Sch Biomed Engn Sendai Miyagi 9808579 Japan|Tohoku Univ Grad Sch Engn Sendai Miyagi 9808579 Japan;

    Tohoku Univ Grad Sch Biomed Engn Sendai Miyagi 9808579 Japan|Tohoku Univ Grad Sch Engn Sendai Miyagi 9808579 Japan;

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