fidoptMulti-scanner lumbar T1 MRI, vertebrae and discs
A native non-contrast T1 lumbar MRI of one patient, with the L1 to L5 vertebral bodies and the four discs between them delineated by hand.
10 test casesspineimage MRresearch only
Read before comparing (3)
- Images. The native T1 intensities, spacing, origin and orientation are kept. Each mask must lie on its T1's grid within SimpleITK's tolerance; no registration or contrast transfer makes the reference.
- Masks. Some masks store binary values as floats with tiny deviations; they are rounded only when every voxel lies within 0.001 of zero or one, and rejected otherwise. Where two released masks overlap, the overlap is ignored rather than given to one class. All nine labels must be present.
- Patients. The provider holds several sessions and sequences for some patients; one annotated non-contrast T1 is kept per patient. The internal IDs cannot show that these patients are absent from other lumbar datasets.
No method has a result on every case of this dataset yet.
Case by case
Click a score to look at that result: the image, the truth in green and the method's map in red. Underlined scores have their image; for the others you see the case without the result.
About the data
- Test cases
- Twenty patients selected among the 32 with a non-contrast T1 scan and all nine masks, shuffled with seed 2026: the first ten are test, the next ten development. One eligible scanner session per patient is chosen deterministically; repeated scans and contrasts never cross the split.
- Truth
- contours by experts Nine released masks drawn on non-contrast T1 by a medical doctor in MITK. Vertebral labels describe vertebral bodies, not the complete posterior vertebral elements.
- Source
- osf.io/qx5rt
osf.io/bj69m - Licence
- CC BY-NC 4.0 in the source license.txt; this more specific file takes precedence over the OSF page CC BY 4.0 field.
10 cases for tuning, never tested
ID02, ID05, ID12, ID17, ID19, ID20, ID25, ID27, ID33, ID35