Green L S, Lux R L, Stilli D, Haws C W, Taccardi B
J Electrocardiol. 1987 Jan;20(1):21-6. doi: 10.1016/0022-0736(87)90003-3.
In order to evaluate the accuracy with which a limited lead array can be used to estimate fine details of the thoracic distribution of cardiac potentials, we compared 192-lead body surface maps and those constructed using a subset of 32 leads. We also evaluated preservation of detail in body surface maps reconstructed following spatial and temporal data representation, a method proposed for quantitative comparison of maps. Maps were analyzed with respect to four previously reported normal map features recorded with extensive lead arrays. The maps constructed from 32 leads accurately reproduced all map features with 92% or greater accuracy. Maps constructed after spatial and temporal data representation had a reproduction accuracy of 93% and 98% respectively for two map features more than 100 microV in amplitude but accuracy with respect to the two map features less than 100 microV in amplitude was 86% and 59% respectively. The study demonstrates that a selected limited lead array permits accurate estimation of the body surface distribution of cardiac potentials even when potentials are low level or occur in regions not directly sampled by a recording electrode. To represent potentials of less than 100 microV, more coefficients would be required to permit accurate spatial and temporal representation.
为了评估使用有限导联阵列估计心脏电位胸部分布精细细节的准确性，我们比较了192导联体表图与使用32导联子集构建的体表图。我们还评估了在空间和时间数据表示后重建的体表图中细节的保留情况，空间和时间数据表示是一种为地图定量比较而提出的方法。针对先前报道的用广泛导联阵列记录的四个正常地图特征对地图进行了分析。由32导联构建的地图以92%或更高的准确率准确再现了所有地图特征。在空间和时间数据表示后构建的地图，对于幅度大于100微伏的两个地图特征，再现准确率分别为93%和98%，但对于幅度小于100微伏的两个地图特征，准确率分别为86%和59%。该研究表明，即使电位处于低水平或出现在记录电极未直接采样的区域，选定的有限导联阵列也能准确估计心脏电位的体表分布。为了表示小于100微伏的电位，需要更多系数以实现准确的空间和时间表示。
