you have a legal right to your records, from anywhere you have a test or visit.
when you go in for the mri tell them you want a copy of the cd and a copy of the report.

you may or may not need to go back to p/u the reports, or, they may have the cd ready for you when you leave. the report may take longer. make the request when you're there because you will have to sign a release.

you won't be able to tell anything yourself by looking at the cd but if you ever see another dr you'll need the copy to take with you. keep the report for your records.

start a medical file on yourself. start to get copies of the dr's dictations. one day it will come in handy. also, for myself, i've read dictations where the info was wrong. you can either call the office and have it changed or write a letter of clarification. fyi.