Ultra-low-field brain MRI morphometry: Test-retest reliability and correspondence to high-field MRI.

ABSTRACT: Magnetic resonance imaging (MRI) enables non-invasive monitoring of healthy brain development and disease. Widely used higher field (>1.5 T) MRI systems are associated with high energy and infrastructure requirements, and high costs. Recent ultra-low-field (<0.1 T) systems provide a more accessible and cost-effective alternative. However, it remains uncertain whether anatomical ultra-low-field neuroimaging can be used to reliably extract quantitative measures of brain morphometry, and to what extent such measures correspond to high-field MRI. Here we scanned 23 healthy adults aged 20-69 years on two identical 64 mT systems and a 3 T system, using T₁w and T₂w scans across a range of (64 mT) resolutions. We segmented brain images into 4 global tissue types and 98 local

SUBMITTER: Vasa F 

PROVIDER: S-EPMC12529345 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature