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What the study reports

Vinke et al. modeled trajectories of volumetric, microstructural, and focal MRI markers using linear mixed models and GEEs in the population-based Rotterdam Study, achieving 10,755 scans from 5,286 participants (mean first-scan age 64.4 y, 56% women) on a single unchanged 1.5T scanner over 11 years — a major hardware-consistency strength Vinke et al., Neurobiology of Aging 2018.

Key findings: all global volumetric/microstructural markers show nonlinear, accelerating change after ~50–55 y; TBV and CSF showed the largest total Z-change (men −6.1, women −4.8); men reach a 2SD change in TBV and MD ~6 years earlier than women (70 vs 76 y); frontal lobe changes first, occipital last; men had higher probabilities of lacunar and cortical infarcts across most of the age range Sex and sequence findings, Vinke 2018.

Critical appraisal

Strengths: longitudinal design, large N, single-scanner consistency, sensitivity analyses (excluding pre-diagnosis scans, single-scan participants) that preserved results, no declared conflicts. Limitations acknowledged by authors: sparse oldest participants and short per-person follow-up make the 95-year-old end of trajectories extrapolative; 35% had only one scan; prodromal neurodegeneration and selection bias (healthier scanners) cannot be fully excluded Author-stated limitations, Vinke 2018. Unaddressed blindspots: the 2SD-change "sequence" metric is itself confounded by marker-specific measurement error and residual variance — the authors flag this but the sequence should be treated as descriptive, not a biological ordering; the cohort is ethnically homogeneous Dutch participants, limiting generalizability; no amyloid/PET or cognitive covariates, so "normal aging" cannot be verified against preclinical AD; 1.5T field strength reduces microbleed sensitivity versus 3T, likely underestimating focal marker prevalence.

Verdict

A rigorous, methodologically transparent reference study whose normative trajectories are genuinely useful for clinical and research benchmarking, but whose terminal age-range estimates and change-sequence ordering warrant cautious interpretation. Confidence: moderate-to-high for mid-range ages (55–85), lower beyond 90.

 BGPT Paper Review

Study Novelty

Aggregates many individually-known findings into one unprecedented longitudinal dataset (10,755 scans), adding novel sequence-of-change and sex-stratified trajectory analyses; individual marker behaviors were already largely established.

Scientific Quality

Methodologically rigorous: single scanner, appropriate mixed models/GEEs, splines, sex interactions, and genuine sensitivity analyses. Main weaknesses are extrapolation beyond observed follow-up and a sequence metric sensitive to measurement error — both self-acknowledged.

Study Generality

Provides population-level normative reference curves across nearly the entire adult age span relevant to aging research broadly, though generalizability is limited by a homogeneous Dutch cohort.

Study Usefulness

Directly usable as normative reference values in memory clinics and as background trajectories for neurodegenerative disease research; also informs power calculations for longitudinal imaging studies.

Study Reproducibility

Methods (R nlme/geepack, FreeSurfer 5.1, described pipelines) are well documented, but individual-level data and code are not publicly deposited, limiting independent replication.

Explanatory Depth

Describes trajectories thoroughly but offers little mechanistic insight; the authors themselves note the biological basis of regional vulnerability (e.g., retrogenesis) remains unknown.