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首页> 外文期刊>American journal of applied sciences >Measurements of Mitral Annular Displacement in 2D Echocardiography Images | Science Publications
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Measurements of Mitral Annular Displacement in 2D Echocardiography Images | Science Publications

机译：二维超声心动图图像中二尖瓣环位移的测量科学出版物

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> >Mitral Annular Displacement (MAD) in echocardiographyhas been described as a variation in mitral annulus position between theend-diastolic and the end-systolic in a complete cardiac cycle. It could beused as a rapid and reproducible method of determining the LV global systolicfunction and could be an easily detectable index for wall motion abnormalities.In this study, a computational method of MAD was implemented based on themitral annulus motion tracking at both sides; namely the lateral side and theseptal side using 2D-Echocardiographic (2DE) datasets. This method comprisesthree main processing stages: 2DE dataset preparation, Region Of Interest (ROI)selection and MAD measurements. For each 2DE dataset, MAD was computed as themovement distance toward the LV apex at both sides individually intwo-consecutive frames using the ‘Euclidian distance' method. Then, the maximumdisplacement occurs during a complete cardiac cycle was measured in millimetres(mm) for each side. The overall datasets used are 178 original2D-echocardiography images in 4-chamber view. The experimental results for MADmeasurements were compared with results that obtained by TMQ Advanced techniqueusing QLAB software. The comparative analysis was done qualitatively by visualobservation of two expert and the comparison scores show that the proposedmethod of MAD measurements has high acceptability of 85%. Furthermore, thequantitative analysis of the MAD method is comparable with TMAD measurements byQLAB and there is no significant differences in displacement measurements.
机译： > >超声心动图中的二尖瓣环位移（MAD）被描述为在整个心动周期中，舒张末期和收缩末期之间的二尖瓣环位置变化。它可以作为一种快速，可重复的确定左室整体收缩功能的方法，并且可以很容易地检测出室壁运动异常的指标。在这项研究中，MAD的一种计算方法是基于两侧的中枢瓣环运动跟踪实现的;即使用2D超声心动图（2DE）数据集的外侧和side侧。该方法包括三个主要处理阶段：2DE数据集准备，感兴趣区域（ROI）选择和MAD测量。对于每个2DE数据集，使用“欧氏距离”方法分别将MAD计算为朝着LV顶点两侧独立的两个连续帧的移动距离。然后，以毫米（mm）为单位测量整个心动周期期间的最大位移。使用的整体数据集是4腔视图中的178张原始2D超声心动图图像。将MAD测量的实验结果与使用QLAB软件通过TMQ Advanced技术获得的结果进行了比较。通过两位专家的目测定性进行了比较分析，比较分数表明，提出的MAD测量方法具有85％的高可接受性。此外，MAD方法的定量分析与QLAB的TMAD测量结果相当，并且位移测量结果没有显着差异。

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