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应用 B型超声对 5 1 6例胎儿的股骨长、双顶径、腹围进行测量 ,经非线性回归分析得出预测胎儿体重的模型 ,并且应用这些模型对 1 2 0例胎儿进行前瞻性验证
B-mode ultrasound was used to measure femur length, biparietal diameter and abdominal circumference in 516 fetuses. Non-linear regression analysis was used to predict fetal weight, and prospective validation was performed using these models in 120 fetuses