三维超声心动图评价右室容量的实验研究

The experimental study of right ventricular volume evaluated by three-dimensional echocardiography

目的 评价三维超声重建定量测定右心室容量的准确性。方法 15个离体新鲜猪心模型 ,采用三维超声测量其右室容量 ,并与实测值比较。结果 新鲜猪心模型右室容量的三维超声测量值与实测值分别为 2 3 5 8± 6 4 2ml和 2 1 70± 5 5 1ml,两者间无统计学差异 (P >0 0 5 ) ;且高度相关 (r=0 93,P <0 0 0 1)。结论 三维超声心动图为定量测定右室容量提供了准确和切合临床实用的新方法。用Pearson相关分析。结果一、右室容量 :三维法测量值与实测值分别为2 3 5 8± 6 4 2和 2 1 70± 5 5 1ml ,两者间无统计学差异 (P >0 0 5 ) ,详见表 1。表 1 三维法测量离体新鲜猪心右室容量与实测值比较编号三维法 (ml)实测值 (ml)编号三维法 (ml)实测值 (ml)115 92 16 8917 2 615 32 2 2 3 12 0 5 10 2 6 5 82 2 23 18 2 0 17 5 1118 2 82 1 64 2 6 10 2 2 612 18 5 416 95 3 8 83 3 2 113 2 6 85 2 3 762 5 65 2 3 2 14 2 1 9619 773 4 2 93 5 2 15 19 5 417 882 3 462 0 4二、三维法测量值与实测值之间关系 :相关分析表明 ,两者之间高度相关 (r=0 93,P <0 0 0 1) ,其直线回归方程为Y =1 0 9X +0 0 6 ,(见图 1)。图 1 三维法测量值与实测值之间的关系讨论目前 ,多种影像学技术如心血管造影、

Objective To assess the accuracy of three-dimensional echocardiography in the quantitative measurement of RV volume by using excised fresh pig heart model.Methods In 15 excised fresh pig heart model,three-dimensional echocardiography was used to reconstruct the right ventricular cavity,and compared with actual volume.Results It was shown that the RV volume measured by three-dimensional echocardiography agreed well with actual volume(r=0.93,P<0.001),and there is no significant difference between the mean values(23.58±6.42 vs 21.70±5.51 ml,P>0.05).Conclusion It is concluded that three-dimensional echocardiography supplies a convenient and accurate method for quantitative assessment for RV volume.