> My annual MRI scan
Not sure if he has an underlying health condition that necessitates an MRI scan yearly or if this is part of his preventative medical regiment (much like an annual physical).
No, when they read a scan, they're supposed to read everything visible for every problem. Think of it this way: if you break your leg and they take an MRI, do you want the radiologist to miss a tumor because he was focused on the break?
I suppose a full body MRI would be very expensive and take a lot of time to read.