Expectant mums will usually get two scans during their pregnancy, but some opt to have a 4D scan as well during the nine months. So what is a 4D scan, what are they like and why do couples get them?

GE Healthcare has invented the world's first CT scanner that can show users animated 4D models (as in 3D models that move) of organs, blood vessels, soft tissues, muscles, vascular structures and ...