Multi-site studies allow for cost-effective research at high-field by increasing the size of the healthy and patient pool.
For T2*-weighted imaging, the variability in the scanners’ shimming conditions may contribute to inconsistent numerical results.In this study we present a multi-site, multi-vendor ‘travelling-heads’ study with harmonized protocols for QSM and R2*-mapping.
Average values across cortical and subcortical ROIs are in agreement with literature, show low variance and high correlation values when comparing measurements across different scanners. R2*-mapping is more stable than QSM due to shimming differences across scanners that affect the background field.
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