论文部分内容阅读
为评价二维超声心动图定量左室心肌重量的准确性。我们取１０个离体新鲜猪心，去除左、右心房和右心室，放入水槽，用ＨｅｗｌｅｔｔｐａｃｋａｒｄＳｏｎｏｓ１０００多功能超声诊断仪和２．５ＭＨｚ探头显示左室长轴切面，录像记录在磁带上。事后用仪器内配置的计算机软件，以Ｓｉｍｐｓｏｎ＇ｓ法计算左室总容积和心腔容积，两者之差即为左室壁心肌容积。左室心肌的重量为左室壁心肌容积和心肌的比重（１．０５）之乘积。结果显示，二维超声心动图测量的左室心肌重量为１５８．０２±３Ｏ．３１ｇ；根据解剖标本实测的左室心肌重量为１５８．１０±２８．６３ｇ。超声超声测值与解剖实测值的差别无显著意义（Ｐ＞０．０５），两者高度相关（ｒ＝０．９９，ＳＥＥ＝４．２８，Ｙ＝－７８５＋１．０５Ｘ，ｐ＜０．０００１），但超声测值略有高估。
To evaluate the accuracy of quantitative two-dimensional echocardiography LV mass. We took 10 fresh pig heart in vitro, remove the left and right atrium and right ventricle, into the sink, with a Hewlett Packard SonoS1000 multi-function ultrasound scanner and 2.5MHz probe shows the long axis of the left ventricular section, the video recorded on the tape. Afterwards, computer software configured in the instrument calculates the total left ventricular volume and the volume of the heart chamber using the Simpson\'s method. The difference between the two is the left ventricular myocardial volume. The weight of left ventricular myocardium is the product of left ventricular wall myocardial volume and myocardial specific gravity (1.05). The results showed that left ventricular myocardial weight measured by two-dimensional echocardiography was 158.02 ± 3O. 31g; measured according to anatomical specimens of left ventricular myocardial weight 158.10 ± 28.63g. There was no significant difference between ultrasound and measured data (r = 0.99, SEE = 4.28, Y = -785 + 1.05X, p <0.0001 ), But the ultrasound measurements slightly over-estimated.