Comparison of MRI head motion indicators in 40,969 subjects informs neuroimaging study design.

ABSTRACT: Head motion during MRI compromises image quality for clinical assessments and research. Active motion reduction strategies are effective but rarely applied due to uncertainty in their value for a given study. The ability to anticipate motion based on group characteristics would aid effective neuroimaging study design. This study compared putative motion indicators for their association to fMRI head motion in a large UK Biobank cohort (n = 40,969, aged 54.9 ± 7.5 years, 53% male). Body Mass Index (BMI; β_adj = .050, p < .001) and ethnicity (β_adj = 0.068, p < 0.001) were the strongest indicators of head motion. A ten-point increase in BMI, which is the difference between "healthy" and "obese", corresponded to a 51% increase in motion. Findings were similar in a subgroup

SUBMITTER: Teo TWJ 

PROVIDER: S-EPMC11603305 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature