From here on in, ask for a CD of every scan you get. This usually means asking at the front desk and filling out a form. The CDs come with reading software built in. Keep your own set of records, as complete as you can get them, and have a copy with you whenever you see a new doctor.
Info falls through the cracks. I'm also a caregiver, and I have provided doctor's office notes and test results that should have been conveyed by one MD to another but that weren't. Fortunately, my own medical team is well-coordinated. Even though my partner has listed our PCP on her HIPPA forms, some test results are still not getting through. Fortunately, I ask for them so I can provide copies. That's not the way it should happen, but it is what it is.