Hello,
The diagnosis of
motor neuron disease is made by neurologists after assessing the patients problems and the physical examination of the patient.
MRI has a very minimal role in contributing to the diagnosis. Generally it is done to rule out other diseases which can mimick motor neuron disease. Now in your case the diagnosis would depend on the doctors assessment. The changes reported in the MRI could be part of aging process. Moderate to severe neural stenosis may need
surgical treatment.
Good luck.