Hashimoto E, Nakaya Y, Ueda S, Aihara T, Nagao T
Jpn Circ J. 1977 Jan;41(1):33-4, 59-66.
Reliability of the polarcardiogram obtained by the newly constructed polarcardiograph, in which the vector sum circuit applying absolute value operations were used for the computation of the magnitude curve, were examined in fifty normal subjects. There was no statistically significant difference between the means of the measured values of the polarcardiogram and of the corresponding polar components calculated from the three scalar ECG concerning all twenty items, namely spatial magnitude, magnitudes in each plane, each longitude and latitude at the time of the spatial maximum QRS and T vectors, except alpha-longitude. Highly significant positive correlations were observed between these two sets of values in all twenty items. Configurations of the pattern obtained by plotting the instantaneous polar components, which were calculated from the three scalar ECG, on the linear time scale were very similar with those of the polarcardiographic records. These findings showed that the records obtained by the newly constructed polarcardiograph were reliable.
使用应用绝对值运算的矢量和电路来计算幅值曲线的新构建极坐标心电图仪所获得的极坐标心电图的可靠性，在50名正常受试者中进行了检查。在极坐标心电图的测量值与从三个标量心电图计算出的相应极坐标分量的测量值的均值之间，就所有二十项指标而言，即空间幅值、每个平面的幅值、空间最大QRS和T向量时的每个经度和纬度（α经度除外），均无统计学上的显著差异。在所有二十项指标中，这两组值之间均观察到高度显著的正相关。将从三个标量心电图计算出的瞬时极坐标分量绘制在线性时间尺度上所获得的模式配置，与极坐标心电图记录的配置非常相似。这些发现表明，新构建的极坐标心电图仪所获得的记录是可靠的。
