2D ultrasound produces outlines and flat-looking images, which can be used to see the baby's body and internal organs. 2D ...

Previous studies of twin growth in the womb involved 2D ultrasound scans and had documented decreased twin growth relative to singletons only in the early 3rd trimester (28 to 40 weeks).

Previous studies of twin growth in the womb involved 2D ultrasound scans and had documented decreased twin growth relative to singletons only in the early 3 rd trimester (28 to 40 weeks).