Methodology of measuring induced postnatal fetal long bones
胎儿长骨超声测量准确性的研究

Objective To investigate the effects of different standard cross sections and angles on the measurement accuracy of induced postnatal fetal long bones.Methods Fetal long bones(femori and humeri)in 30 cases with induced abortion were measured utilizing ultrasound from different angles and /or at different directions.The values measured from different sections and angles with vernier calipers were compared prenatally and postnatally.Results There was no apparent difference between the pre-induced abortion and...