In the womb, multiples like twins or triplets are assigned labels, A, B, C, based on their position, with Baby A usually born ...

The scan uses a technique called “oversampling”, which Dr. Taylor-Clark says is much more detailed than conventional MRI scans: “What we do differently is, much thinner slices of the brain.

One of Marisa’s triplets had a condition concerning an extra tissue that could have lead to fetal anemia. “She was the one we were really worried about,” Samuel said.

A team of researchers from Durham University, UK, has been analyzing data from 4D ultrasound scans which create three dimensional renderings of unborn children that depict motion in real time.