Quantitative Susceptibility Mapping-Based Characterization of Lesion Heterogeneity in Multiple Sclerosis.
BACKGROUND Quantitative susceptibility mapping (QSM) characterizes multiple sclerosis (MS) lesions through susceptibility changes related to iron and myelin. However, the prevalence, regional distribution, and relationship of QSM-defined lesion subtypes with choroid plexus alterations remain unclear. PURPOSE To chara...