Deng J, Cheng P X, Gao S Y, Wen L Z
Department of Pediatrics, Tongji Hospital, Tongji Medical University, Wuhan, People's Republic of China.
J Clin Ultrasound. 1992 Jan;20(1):3-9. doi: 10.1002/jcu.1870200103.
Because of the fluid-filled lungs in the fetus, the ultrasound beam can penetrate to the root of the pulmonary artery perpendicularly. Using M-mode echocardiography, the following dimensions were measured: the pulmonary and aortic valve excursion in 19 fetuses, and the pulmonary and aortic root internal diameter in 70 fetuses, between 18 and 42 weeks, menstrual age. The measured dimensions were then correlated with the biparietal diameter. The correlation coefficients for the measurements ranged from 0.873 to 0.892. Regression analysis showed that the best fit of the data was a linear model from which the 5% and 95% confidence limits were derived for individual predictions of the arterial dimensions. The ratios of the pulmonary/aortic valve excursion and the pulmonary/aortic internal diameter were approximately 1:1. These results are of potential value in the prenatal detection of great arterial valve or root diseases.
由于胎儿肺部充满液体，超声束可以垂直穿透至肺动脉根部。使用M型超声心动图，在孕龄18至42周期间，测量了19例胎儿的肺动脉和主动脉瓣活动幅度，以及70例胎儿的肺动脉和主动脉根部内径。然后将测量尺寸与双顶径进行关联。测量的相关系数范围为0.873至0.892。回归分析表明，数据的最佳拟合是线性模型，据此得出动脉尺寸个体预测的5%和95%置信限。肺动脉/主动脉瓣活动幅度与肺动脉/主动脉内径之比约为1:1。这些结果在产前检测大动脉瓣膜或根部疾病方面具有潜在价值。
