Great that you're getting all the scans done @SueD - all the best for your results xx ....
That gives you a base line to check against every other scan from here on, which is a good thing xx. I reckon everyone really should have a full body 'something' done at the start of treatment, exactly for that comparison later on (and possibly identifying unknown bits as well ...). But I guess it is just an expense thing ...
Keep eating well & exercising as much as you can, yoga as well .... all these things help keep your body & mind busy .... xx. Yep, try not to get too far ahead of yourself xx
take care