At my NT scan baby measured 14 weeks but they didn't switch to the 3D feature. To be honest I'm not sure I'd have wanted them too. They look freaky in 3D until they start to get fatter later on.
I just had my 14 w 6 day ultrasound, but I think my due date is wrong. I was originally a week later but they pushed it back. Even baby's measurements are at about 15.5-16.3 weeks. Tech said that they start growing at their own rate, but I'm assuming you should still be able to see about the same. We were able to see all major body parts, arms, feet, hands, heart, ribs, spine, brain.... Pretty much everything and very clearly.
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