How come you got scans where you can clearly discern the baby even once it has been shrunk down to an avatar???
There I was, desperately checking this grey, amorphous lump trying to make absolutely sure that there weren't going to be any twins in there, and all the time, other people actually get scans where you can tell the difference between a baby and a shoal of cod??
In case you're wondering, the lady doing the scan actually explained that the technology was exactly the same as that used by fishing vessels to detect shoals at sea.