InVivo Validation of ElectrocardiographicImaging.
InVivo Validation of ElectrocardiographicImaging.
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DOI：
10.1016/j.jacep.2016.11.012
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发表时间：
2017-03-01
期刊：
影响因子：
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通讯作者：
Volders, Paul G A
中科院分区：
文献类型：
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作者：
Cluitmans, Matthijs J M;Bonizzi, Pietro;Volders, Paul G A
目的：本研究的目的是通过同时进行心电图成像（ECGI）和有创心外膜电图，评估心外膜电位、电图、激活和恢复等时线以及心跳起源的无创重建的准确性。背景：心外膜电位无创成像，即ECGI，越来越多地应用于患者评估正常和异常的心电活动。方法：记录正常麻醉犬体表电位和心外膜电位。计算机断层扫描提供了身体-心脏的几何形状，用于从体表电位重建心外膜电位。结果：与心外膜记录相比，电图重建获得了中等的准确性（中位相关系数：0.71），但存在相当大的差异（四分位数范围：0.36至0.86）。这种差异可以用空间不匹配来解释(总分辨率为
OBJECTIVES: The purpose of this study was to evaluate the accuracy of noninvasive reconstructions of epicardial potentials, electrograms, activation and recovery isochrones, and beat origins by simultaneously performing electrocardiographic imaging (ECGI) and invasive epicardial electrography in intact animals.BACKGROUND: Noninvasive imaging of electrical potentials at the epicardium, known as ECGI, is increasingly applied in patients to assess normal and abnormal cardiac electrical activity.METHODS: Body-surface potentials and epicardial potentials were recorded in normal anesthetized dogs. Computed tomography scanning provided a torso-heart geometry that was used to reconstruct epicardial potentials from body-surface potentials.RESULTS: Electrogram reconstructions attained a moderate accuracy compared with epicardial recordings (median correlation coefficient: 0.71), but with considerable variation (interquartile range: 0.36 to 0.86). This variation could be explained by a spatial mismatch (overall resolution was