I've had an MRI but it was mainly to rule out any C spine problems that might have been causing my arm/neck/shoulder pain.

Mine showed mild c4/5/6 osteo/spurs and none of my symptoms were thought to be from the c spine.
One Dr called my problem " chronic cervico/thoracic spine strain with arm pain"

My dad has DDD but I haven't seen his MRIs.

Many of the members on some the other forums have had MRIs for various conditions in the past, and out of curiosity I've read and done some searches on the terminology.