Methods To determinate the LVEF of 42 cases with 2-d echo and LVG respectively and calculate the linear correlation coefficient and limits of agreement.
方法：检测左室造影并于同期行二维超声心动图检查的42例患者的LVEF，计算2种方法的相关系数和一致性范围。
A 1-d ECG data was first segmented and aligned to a 2-d data array, which fully utilizing the two kinds of correlation of heartbeat signals.
基于ECG数据的两种相关性，该方法首先将一维ecg信号转化为二维信号序列。
A 1-d ECG data was first segmented and aligned to a 2-d data array, which fully utilizing the two kinds of correlation of heartbeat signals.
基于ECG数据的两种相关性，该方法首先将一维ecg信号转化为二维信号序列。
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