MRI-derived choroid plexus volume and longitudinal cognitive decline in Parkinson's disease.
BACKGROUND Magnetic resonance imaging (MRI)-derived choroid plexus (CP) volume has been associated with cognition in Parkinson's disease, but its close relationship with ventricular anatomy complicates interpretation. METHODS We analyzed Parkinson's Progression Markers Initiative (PPMI) data. Baseline FreeSurfer-deri...