MRI Sequence Selection for Brain Tumor Segmentation
GetDATA Team · · 1 min read
The sequences a tumour model needs
Brain-tumour segmentation is inherently multi-parametric: each MRI sequence highlights a different aspect of the lesion. Models in the BraTS lineage expect a standard four: T1, contrast-enhanced T1, T2 and FLAIR.
What each contributes
- T1c (post-gadolinium): enhancing tumour and active margins.
- FLAIR: peritumoural edema and infiltration.
- T2: overall lesion extent and fluid.
- T1: anatomical reference and necrosis.
Harmonisation across scanners
MRI intensities are not standardised, so multi-site data needs intensity normalisation (and often ComBat) before pooling. Document field strength (1.5T vs 3T) and voxel spacing, and prefer BIDS-organised studies.
Sourcing labelled MRI
Post an MRI request on GetDATA specifying the required sequences, field strength, annotation type and case counts; verified providers contribute expert voxel-level segmentations on compliant, de-identified studies.