Fetus morphology changes by second
Second trimester ultrasound scan
When LMP and Ultrasound Dates Don't Match: When to Redate?
OB Ultrasound Second Trimester (The Basics)
Second Trimester Ultrasound Scans: Everything You Need To Know
First trimester screening can be performed between 11 and 14 weeks which involves a blood test and an ultrasound examination.
A cerebellum measuring 2 mm less than gestational age is a concerning finding.