Chen T, Besio W, Dai W
Louisiana Tech University, Department of Biomedical Engineering, LA, USA.
Annu Int Conf IEEE Eng Med Biol Soc. 2009;2009:3286-9. doi: 10.1109/IEMBS.2009.5333741.
A comparison of the performance of the tripolar and bipolar concentric as well as spline Laplacian electrocardiograms (LECGs) and body surface Laplacian mappings (BSLMs) for localizing and imaging the cardiac electrical activation has been investigated based on computer simulation. In the simulation a simplified eccentric heart-torso sphere-cylinder homogeneous volume conductor model were developed. Multiple dipoles with different orientations were used to simulate the underlying cardiac electrical activities. Results show that the tripolar concentric ring electrodes produce the most accurate LECG and BSLM estimation among the three estimators with the best performance in spatial resolution.
基于计算机模拟，对用于心脏电活动定位和成像的三极同心、双极同心以及样条拉普拉斯心电图（LECG）和体表拉普拉斯映射（BSLM）的性能进行了比较。在模拟中，开发了一个简化的偏心心脏 - 躯干球 - 圆柱均匀容积导体模型。使用具有不同方向的多个偶极来模拟潜在的心脏电活动。结果表明，在这三种估计器中，三极同心环电极产生的LECG和BSLM估计最为准确，在空间分辨率方面表现最佳。
