Fig. 1

PRISMA flowchart for data selection in Alzheimer’s disease and Parkinson’s disease meta-analyses. AD = Alzheimer’s disease; DTI-ALPS = diffusion tensor image analysis along the perivascular space; PD = Parkinson’s disease; Subj = subjects.

PRISMA flowchart for data selection in Alzheimer’s disease and Parkinson’s disease meta-analyses. AD = Alzheimer’s disease; DTI-ALPS = diffusion tensor image analysis along the perivascular space; PD = Parkinson’s disease; Subj = subjects.