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应用多平面经食管三维超声心动图技术（3DE）对30例冠心病患者（A组）及7例非冠心病患者（B组）的左室容量和射血分数等心功能指标进行了分析，并与二维超声心动图（2DE）及心导管左室造影（LVA）的测值进行对比，结果显示：①在B组患者中，2DE及3DE所测左室容量及射血分数均与左室造影结果高度相关（P＜0．01）；在A组患者中，2DE所测各项指标的相关性明显下降，而3DE仍与左室造影相应测值呈高度相关（P＜0．01）；②在B组患者中，2DE及3DE与左室造影所测EF无显著性差异（P＞0．05）；在A组患者中，2DE所测EF高于左室造影结果（P＜0．05），而3DE所测EF与左室造影结果无显著差异（P＞0．05）；③A组患者的ESV显著高于B组，而EF则小于B组（P＜0．05）。表明冠心病的存在使2DE左室功能测量的准确性显著下降，而对3DE左室功能测量的准确性则无明显影响；同时，与非冠心病组相比，冠心病患者的ESV明显增加而EF则显著下降。
The cardiac function indexes of left ventricular volume and ejection fraction in 30 patients with coronary heart disease (A group) and 7 patients with non-coronary heart disease (B group) were analyzed by multiplanar transesophageal echocardiography (3DE) The results of two-dimensional echocardiography (2DE) and left ventricular catheterization (LVA) showed that: (1) In group B, both left ventricular volume and ejection fraction measured by 2DE and 3DE were (P <0.01). In group A, the correlation between the indexes measured by 2DE decreased significantly, while the correlation between 3DE and left ventricular angiography showed a significant correlation (P <0.01) ); ② In group B, 2DE and 3DE were significantly different from EF measured by left ventricular angiography (P> 0.05); in group A, EF measured by 2DE was higher than that of left ventricular angiography (P < (P> 0.05). However, there was no significant difference between 3DE and EF (P> 0.05). The ESV in group A was significantly higher than that in group B, while EF was less than that in group B (P <0.05) . The results showed that the presence of coronary heart disease significantly decreased the accuracy of left ventricular function measurement of 2DE and had no significant effect on the accuracy of left ventricular function measurement of 3DE. Meanwhile, compared with non-coronary heart disease group, the ESV of coronary artery disease increased significantly EF decreased significantly.