MVG

Objective To analyze the clinical value of peak myocardial velocity gradient ( MVG) as a noninvasive indicator of left ventricular ( LV) systolic or diastolic function.

目的探讨心肌速率阶差MVG评价左室舒缩功能的价值。

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Conclusion As a useful index for quantitative evaluation of LV regional function, MVG may be used as a new parameter for evaluation of myocardial viability and the prediction of the recovery of regional myocardial dysfunction.

结论MVG可准确定量评价左室局部运动，有望作为临床评价AMI患者存活心肌、预测可逆性左心功能障碍恢复的新指标。

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Conclusion: MVG can quantitatively analyze the motional state of regional myocardium, alternatively providing an effective index of evaluating cardiac function in coronary artery disease.

结论：MVG可定量评价局部心肌运动状态，为临床心功能评价提供有效指标。

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With color-coded M-mode TDI, the endocardial 、 epicardial velocities and the myocardial velocity gradient ( MVG) were calculated within posterior wall from left ventricular long-axis view.

a）组织多普勒检查：M型彩色多普勒测量左室长轴切面T波顶点时左室后壁（心内膜、心外膜）的心肌运动速度（Vendo、Vpi）、心肌运动速度跨壁梯度（MVGm）；

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Maze-like vertically-oriented graphene ( MVG) was grown with a home-made surface mode microwave-PECVD reactor for comparison. 2.

为了比较，采用自制的微波-等离子体增强化学气相沉积（M-PECVD）反应器制备了迷宫状的垂直取向石墨烯（MVG）。

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Conclusion Our observation indicated that MVG calculated by curved M-mode echocardiography made in our laboratory is a reliable and simple method for measurement of MVG, which simplified the process of complicated measurement of MVG.

结论自制曲线解剖M型超声图像方式MVG检测方法操作简便易行、重复性较好，使复杂的MVG测定过程简化，易于临床应用。

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It is useful for preventing the occurrence of severe MR that using a stepwise dilatation technique and monitoring the changes of mitral valve gradient and cardiac murmur during PBMV procedure;

采用球囊直径递增法扩张并监测MVG、监听心杂音变化能有效预防严重MR的发生；

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The two-parameter MVG model yields the largest errors among the five models, and therefore is not suitable for describing soil particle-size distributions in Fengqiu area.

在这五种参数模型中，MVG模型的误差最大，不能精确描述封丘地区壤土类土壤的颗粒大小分布。

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