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。
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。
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.
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