More accurate fetal growth data
Saturday, November 29th, 2008(cz) More accurate first trimester dating of pregnancies by ultrasound is set to become available for women courtesy of new Australian research.
Currently in Australia, first trimester fetal growth charts often rely on data reported up to 30 years ago, using outdated technology and containing several important methodological limitations, according to the study authors in the Journal of Medical Imaging and Radiation Oncology (2008) 52, 471-479.
In this study [link] , researchers performed a first trimester ultrasound on almost 400 pregnant women, who were certain of their dates, including 8% who had undergone IVF . They used modern equipment, transvaginal ultrasound where appropriate, a strict protocol on how measurements were to be taken, and a current Australian urban population.
Following measurements of the crown-rump length and biparietal diameter, researchers were able to calculate equations, means and 90% reference intervals for these ultrasound growth markers.
The resulting first trimester ultrasound dating and growth charts were shown to be considerably more accurate than any previous models in predicting gestational age, which will be good news for pregnant women, up to 40% of whom have incorrect dates. more…
From: »Six Minutes«


