Scientists use novel PET tracer to peer into brains of progressive MS patients

This study aims to understand how brain connections (synapses) are lost in progressive multiple sclerosis (MS). Researchers will use a new type of PET scan to measure synaptic density in 30 people with progressive MS, relapsing-remitting MS, and healthy volunteers. The goal is to see how these brain changes relate to disability, thinking problems, and blood markers. This is an early-phase observational study, not a treatment trial.