Scatter-plots showing the significant associations between whole-brain atrophy and ventricular enlargement with MDS cognitive domains in the total PD sample. (A) PBVC–memory, memory follow-up (B) VIENA–attention, attention follow-up (C) VIENA–memory, memory follow-up (D) VIENA–executive function, executive follow-up, and executive change. Abbreviations: MDS, Movement Disorders Society; PBVC, percentage brain volume change; VIENA, ventricular enlargement.