This is my understanding, and I will try and remember to ask my nuero tomorrow.

A T1 hyperintense in one that intensifies with contrast, meaning it is active or coming out of an active cycle. The T2 are newer, but not healed and the hypo ones are older and more healed up.

I'll do more research, and as I said, if I remember will ask my nero tomorrow!!

Don't give yourself something to worry about. Write your questions down, and ask.

Also, how many T1's does your mri say you have. Most RRMS have at least one!