Sorry about your husband and friend.
Well I have ins and medicare as a secondary so I have no problems with getting the med bills paid.
I got the CT, PET and bone scan done at the beginning. Then during the chemo I got a CT to see that the chemo was working. During my remission periods I got a CT of chest and abd and blood work-cbc, chem profile and a cholesterol-ldh ( it increases with an increase of sclc-weird!) done every 3-4 months. Now that it has been 2 yrs since any signs of the cancer I get a CXR and bld work 3 months then 3 months later a CT and the bld work. I also have had a bone scan done this last spring-lots of bone/joint pain-so they ruled out mets to the bone.
The Dr is afraid the radiation from the CT may cause problems since I have had so many.
PET scans are done as a norm at the beginning, MRI's are done for checking for mets to the brain. I have had 2 since 2001, I had headaches and some vision changes, thank God there was nothing there.
Hope this helps.
Cindy