Growth scan question..

Whats the probability of getting a peak of my baby boy in 3d at the growth scan? Just wondering how common it is? Im dying to see if he looks anything like his brother did. I got a 3d image of his brother when I was like 23-24 weeks at anatomy scan, and wasnt offered the growth scan. Now Im getting one and havent seen my new little in 3d at all. I know each practice is different which is why Im asking lol. So if you were offered a growth scan at any point in your previous or current pregnancy did your tech give you a 3d/4d peek at baby??