Wow, those 3D scans are really something these days.
Here in the US, there are clinics that offer 'scanning sessions' so you can get photos and video of the baby - you can even invite family along and make it an event.
Nothing to do with your doctor, just a service that you pay for if you want pics and video.
They offer 'package' of images, prints, CDs, DVDs etc - just like a wedding photography business!