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First‐trimester fetal biometry using transvaginal sonography
Author(s) -
Lasser D. M.,
Peisner D. B.,
Vollebergh J.,
TimorTritsch I.
Publication year - 1993
Publication title -
ultrasound in obstetrics and gynecology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.202
H-Index - 141
eISSN - 1469-0705
pISSN - 0960-7692
DOI - 10.1046/j.1469-0705.1993.03020104.x
Subject(s) - medicine , maldevelopment , transvaginal sonography , biparietal diameter , crown rump length , first trimester , fetus , fetal head , obstetrics , gestational age , second trimester , pregnancy , head circumference , anatomy , biology , genetics
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. Copyright © 1993 International Society of Ultrasound in Obstetrics and Gynecology