Do you really need that MRI of your back?

I once heard a chiropractor say that he could get an MRI of your phone that would show every part inside, but would not tell him if the phone was ringing or not. MRI' and CT's have very high false positive rates showing many abnormalities that have nothing to do with a patient's pain. Relying on these so heavily as has become the norm in medical practice many times leads the clinician astray from the actual cause of the problem and leads to unnecessary/incorrect and dangerous treatments and increases disability.
I have had many patients tell me they were not even examined or touched by the doctor. Now that is very sad care.
Has anyone ever gone to a doc for a back or joint problem and not been examined?

Do you really need that MRI of your back?