hello4dHello Baby are the North West’s leading baby ultrasound boutique, offering a selection of different, amazing private baby scans along with 13 week gender scans to prepare the parents forWhat is 2D, 3D and 4D? 2D is the standard black and white ultrasound. This type of ultrasound is recommended for babies that are 20 weeks and younger. 2D is the preferred type of imaging