From what I know it is limited to leg work, it is a set of "boots" that are wrapped around the horses legs and only used to check for "Deep" hidden issues. That the others may not reveal.

The horse doesn't have to be put under for this part of the exam. But the cost is really high I didn't realize that it went up to 3 thousand!

Wow. Well as everything else as technology emerges the price will surely go down.