A multiple active contour model for cardiac boundary detection on echocardiographic sequences
A multiple active contour model for cardiac boundary detection on echocardiographic sequences
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DOI：
10.1109/42.500138
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发表时间：
1996-06-01
影响因子：
10.6
通讯作者：
Kim, YM
中科院分区：
文献类型：
--
作者：
Chalana, V;Linker, DT;Kim, YM
超声心动图序列上左心室心外膜和心内膜边界的追踪对于心功能的量化至关重要。我们设计了一种基于活动轮廓模型扩展的方法，用于检测跨越整个心动周期的短轴心脏序列上的心外膜和心内膜边界。我们通过将计算机生成的边界与四位专家观察员在 44 个临床数据集上手动勾画的边界进行比较来验证结果。计算机生成的边界和手动勾画的边界之间的平均边界距离，心外膜为 2.80 毫米（西格玛 = 1.28 毫米），心外膜为 3.61（西格玛 =心内膜的距离为 1.68 毫米），这些距离与观察者间距离相当，心外膜边界的平均值为 3.79 毫米（西格玛 = 1.53 毫米），心内膜边界的平均值为 2.67 毫米（西格玛 = 0.88 毫米）。计算机生成的边界所包围的区域与平均手动勾画的边界之间的相关系数对于心外膜为 0.95，对于心内膜为 0.91。该算法对初始曲线的选择相当不敏感，因此，我们开发了一种有效且稳健的算法来从超声心动图序列中提取左心室边界。
Tracing of left-ventricular epicardial and endocardial borders on echocardiographic sequences is essential for quantification of cardiac function. We designed a method based on an extension of active contour models to detect both epicardial and endocardial borders on short-axis cardiac sequences spanning the entire cardiac cycle, We validated the results by comparing the computer-generated boundaries to the boundaries manually outlined by four expert observers on 44 clinical data sets, The mean boundary distance between the computer-generated boundaries and the manually outlined boundaries was 2.80 mm (sigma = 1.28 mm) for the epicardium and 3.61 (sigma = 1.68 mm) for the endocardium, These distances were comparable to interobserver distances, which had a mean of 3.79 mm (sigma = 1.53 mm) for epicardial borders and 2.67 mm (sigma = 0.88 mm) for endocardial borders, The correlation coefficient between the areas enclosed by the computer-generated boundaries and the average manually outlined boundaries was 0.95 for epicardium and 0.91 for endocardium, The algorithm is fairly insensitive to the choice of the initial curve, Thus, we have developed an effective and robust algorithm to extract left-ventricular boundaries from echocardiographic sequences.