Cayea P D, Grant D C, Doubilet P M, Jones T B
Radiology. 1985 May;155(2):473-5. doi: 10.1148/radiology.155.2.3885312.
The ability of three ultrasound (US) parameters--echogenicity, texture, and through transmission--to predict fetal lung maturity was tested in 59 patients using currently available clinical US equipment. The chi square test was used to determine whether there was an association between any single parameter and a "mature" lecithin/sphingomyelin (LS) ratio or specific phosphatidycholine (SPC). Multiple linear regression analysis was used to assess the combined ability of these three parameters and gestational age to predict LS ratio and SPC. There was no correlation between fetal lung maturity, as determined by mature LS and SPC indices, and the US parameters tested using unmodified clinical equipment.
利用现有的临床超声设备，对59例患者进行了三项超声（US）参数——回声性、纹理和透声性——预测胎儿肺成熟度能力的测试。采用卡方检验来确定任何单个参数与“成熟”的卵磷脂/鞘磷脂（LS）比值或特定磷脂酰胆碱（SPC）之间是否存在关联。使用多元线性回归分析来评估这三个参数与胎龄预测LS比值和SPC的综合能力。根据成熟的LS和SPC指数确定的胎儿肺成熟度，与使用未改良临床设备测试的US参数之间没有相关性。
