Hi, my cat once had anabolic injections & they did work to give her an appetite, not sure if they`d be what the vet is giving your dog tho.
Yes I think a house move could have upset her, she`s old & maybe hasn`t taken to it so well even tho its only a few doors away everything else inside will be a change for her.
Have you tried tempting her with smaller but more often meals thruout the day?
Thats good news with the scan & xrays being clear, just have to find something to stimulate her to eat now, I`m sure the injections will work :)
Christine, Spain.