While multiple sclerosis (MS) is traditionally regarded as restricted to the central nervous system (CNS), an involvement of the peripheral nervous system (PNS) has been previously detected by histopathology and magnetic-resonance-neurography (MRN). In the CNS, magnetization transfer contrast (MTC) imaging correlates with areas of demyelination in MS. Here, we aim to characterize and quantify peripheral nerve involvement in patients with relapsing-remitting MS (RRMS) by MTC imaging in correlatio…