Radiology

Crown-rump length

Fetus

First trimester

Biology

Obstetrics

Ultrasound

Gestational age

Pregnancy

Gestation

Genetics

Medicine

American Journal of Obstetrics & Gynecology MFM

Optimal prenatal care relies on accurate gestational age dating. After the first trimester, the accuracy of current gestational age estimation methods diminishes with increasing gestational age. Considering that, in many countries, access to first trimester crown rump length is still difficult owing to late booking, infrequent access to prenatal care, and unavailability of early ultrasound examination, the development of accurate methods for gestational age estimation in the second and third trimester of pregnancy remains an unsolved challenge in fetal medicine.

Analysis of maturation features in fetal brain ultrasound via artificial intelligence for the estimation of gestational age