Left atrial volume measurement with automated border detection by 3-dimensional echocardiography: comparison with magnetic resonance imaging
Left atrial volume measurement with automated border detection by 3-dimensional echocardiography: comparison with magnetic resonance imaging
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DOI：
10.1186/1476-7120-7-16
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发表时间：
2009-03-31
影响因子：
1.9
通讯作者：
Woods, Timothy D.
中科院分区：
文献类型：
--
作者：
Artang, Ramin;Migrino, Raymond Q.;Woods, Timothy D.
目的：左心房大小是不良心血管事件的重要标志。普遍认为左心房容积指数（LAVI）是测量大小的最佳方法。目前的LAVI测量技术是费力的。三维超声心动图（3DE）系统的半自动测量可能是测量LAVI的实用临床替代方法，但尚未根据磁共振成像（MRI）金标准对其进行充分评价。本研究的目的是比较市售的3D算法测量LAVI对LAVI从MRI和面积长度法（ALM）的准确性设计：在27个连续的主题提到心脏MRI（年龄54 +/- 13岁，63%的男性），LAVI测量使用3种成像模式：3DE，ALM，MRI和相关的结果。使用标准的美国超声心动图协会指南测量ALM。结果：3DE与MRI测量左房收缩期、舒张期容积及左房射血分数相关性显著（收缩期r = 0.86，舒张期r = 0.76，射血分数r = 0.88，P均< 0.0001）。3DE与ALM测量的舒张期容积也有显著相关性（r = 0.77，P < 0.0001）。使用3DE获得LAVI的时间比使用ALM更短（56 +/- 8 vs 135 +/- 55秒，P < 0.0001）。结论：与当前标准相比，具有半自动边界检测的三维超声心动图是一种以更省时的方式获得左心房容积的实用替代方案。
Objective: Left atrial size is an important marker for adverse cardiovascular events. There is general consensus that left atrial volume index (LAVI) is the best measurement of size. The current LAVI measurement techniques are laborious. Semi-automated measurement with a 3-dimensional echocardiography (3DE) system may be a practical clinical alternative to measure LAVI, but it has not been adequately evaluated against Magnetic Resonance Imaging (MRI) gold standard. The aim of this study was to compare the accuracy of a commercially available 3D algorithm for measurement of LAVI against LAVI obtained from MRI and Area Length Method (ALM).Design: In 27 consecutive subjects referred for cardiac MRI (age 54 +/- 13 years, 63% male), LAVI was measured using 3 imaging modalities: 3DE, ALM, MRI and the results were correlated. ALM was measured using standard American Society of Echocardiography guidelines. The time required to measure LAVI by 3DE and ALM were compared.Results: There was a significant correlation in systolic and diastolic LA volumes and left atrial ejection fraction between 3DE and MRI (r = 0.86 for systole, r = 0.76 for diastole, r = 0.88 for ejection fraction, P < 0.0001 for all). There was also significant correlation of diastolic volumes between 3DE and ALM (r = 0.77, P < 0.0001). The time to obtain LAVI was shorter using 3DE versus ALM (56 +/- 8 vs 135 +/- 55 seconds, P < 0.0001).Conclusion: Three-dimensional echocardiography with semiautomatic border detection is a practical alternative for obtaining the left atrial volume in a time-efficient manner compared to the current standard.