First-trimester fetal biometry using transvaginal sonography

1 March 1993

journal article
Published by Wiley in Ultrasound in Obstetrics & Gynecology

Vol. 3 (2) , 104-108
https://doi.org/10.1046/j.1469-0705.1993.03020104.x

Abstract

First-trimester fetal biometry using transvaginal sonography is now feasible and desirable due to improved imaging and probe maneuverability. A study of 144 early normal pregnancies with precise dates is presented. Regression models were constructed for the crown-rump length, biparietal diameter, head circumference and abdominal circumference. Error analysis of the technique and calculations was performed. First-trimester fetal biometry may be used for obtaining precise estimates of gestational age and may help to detect early fetal maldevelopment resulting in abnormal growth.

Keywords

SONOGRAPHY
ERROR ANALYSIS
TRIMESTER FETAL
PREGNANCIES
GYNECOLOGY
FETAL BIOMETRY USING
USING TRANSVAGINAL

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