In this collaborative work between researchers from ELSC and Stanford University we mapped a measure called R1 in the cortex. R1 provides accurate information about the microstructural properties of the brain. We show how R1 can predict age. Additionally, we tested a cohort of Multiple Sclerosis (MS) patients against our (healthy) age prediction model. The MS patients were predicted significantly older than their real age when using R1. We also observed additional parameters, like cortical thickness, that are correlated with R1.