Normal Range Curves for the Intrauterine Growth of the Biparietal Diameter
作者： P.-H. Persson , L. Grennert , G. Gennser , B. Gullberg
DOI: 10.3109/00016347809162697
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摘要: Normal range curves for the growth of fetal biparietal diameter (BPD) measured by ultrasound were calculated in three different ways; I. 93 selected women examined longitudinally with three-week intervals from 16th gestational week to term. II. Measurements each compiled only first measurement patient. From 20th 30th week, 3,243 BPD determinations obtained a routine screening programme was used. III. 157 measurements 60 known date ovulation.The results revealed that ways almost identical. The daily increase 0.44 mm up 33rd week. Thereafter, increment declined. data best explained an equation third degree (98.9 %) whole investigated period (16-40 weeks), and before fitted straight line. Reliability assessed test-retest method. error introduced unreliability had standard devia...
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