<prompt> Answer this question truthfullyWhat are the characteristics of brain myelination on imaging? At what age do babies reach adult T1 and T2 signal patterns in the brain?  <response>: <reason> The characteristics of brain myelination on imaging are that immature brain matter has a higher water content than myelinated fattier brain, and is therefore T2 brighter. During maturation, water content decreases and fat content increases, resulting in a higher T1 signal. The T1 changes precede the T2 changes, with the adult T1 pattern seen around age 1, and the adult T2 pattern seen at age 2. 