HI, My Doctor Today Said, "In Conclusion, You Have Moderately

HI, My doctor today said, "In conclusion, you have moderately extensive nonspecific periventricular and centrum semiovale white matter changes most consistent with nonspecific age-related ischemic changes. There is no enhancement." The physician, a neurologist, read to me from a print out from the results of an MRI with and without contrast. I'm confused. I tried to be specific, but......... does this mean I have hardening of the arteries? He did say "blood vessel changes," but that was the best I could get from him. Please explain the "conclusion" he gave me. thank you.