MITexp10: T1w MRI of Gadavist contrast distribution after intracerebral infusion in mice (needle vs LUCID device)

# MITexp10 T1-weighted MRI (Bruker BioSpec 3T, RARE) of Gadavist contrast distribution following intracerebral infusion in mice. Two infusion modes: standard needle (control) and the LUCID device. ## Subjects - sub-01 to sub-05: needle (control) - sub-06 to sub-10: device (LUCID) Ten animals, all included in the analysis. Two additional animals from the original cohort were excluded prior to analysis (device malfunction) and are not in this release. ## Imaging Each `sub-*/anat/sub-*_T1w.nii.gz` is the axial T1w RARE volume used for the analysis (Bruker scan 2), converted from the ParaVision `2dseq` reconstruction. Matrix 192x192, 15 slices, in-plane 0.1042 x 0.0894 mm, slice thickness 1.0 mm. The affine is a nominal diagonal (correct voxel sizes, origin at volume center); absolute scanner orientation from the Bruker geometry was not reconstructed. ## sourcedata/ Full raw Bruker ParaVision study folders per subject (all scans: localizer, scan 2 T1w RARE used for analysis, scan 3 T1w RARE). See `sourcedata/README` for de-identification notes. ## derivatives/contrast-segmentation/ Contrast-enhanced region masks (`sub-*_desc-contrastEnhanced_mask.nii.gz`) placed on the T1w grid, with per-slice and total-volume metrics. Region grown from a manually placed seed; per-slice threshold is a percentile of brain signal.