fidoptSynthRAD2025 MR/CT, head and neck
CT (fixed) and MR (moving) of the head and neck of one patient (SynthRAD2025, Task 1).
Read before comparing (3)
- Labels. TotalSegmentator, run by us on each image, the MR through a CT synthesised from it: a method that registers on that network's features is scored against its own view of the anatomy.
- Specks. The network also marks specks of the abdomen and pelvis in these head and neck scans, 2 to 1,103 voxels, kept as segmented. A speck on one image only is never scored, since a structure is scored only where both images hold it, but 6 of the 10 test pairs hold some on both images, 21 structures in all (stomach, liver, colon, gallbladder, pancreas, bladder and others), scored like the rest of the case.
- Mask. The challenge's body mask, the same for both images.
No method has a result on every pair of this dataset yet.
| Accuracy | Smoothness | Cost | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| # | Method | Dice | Change | HD95 mm | SDlogJ | Folds % | Time s | RAM GB | GPU GB | Images |
| No registration | 0.533 ±0.099 | 14.75 ±6.02 | 0.000 | 0.00 | ||||||
Dice: how much the organ contours overlap, 1 is perfect. HD95: distance between the contours' surfaces. SDlogJ: how irregular the deformation is, 0 is perfectly smooth. Folds: share of the image where the deformation folds over itself.
Pair by pair
Click a score to look at that result: the fixed image, and over it the moving image after registration, with the annotations. Underlined scores have their image; for the others you see the pair without the result. A green cell gained against no registration on that pair, a red one lost.
About the data
- Test pairs
- 10 test pairs picked by a fixed rule before any result, one a patient, the centres alternated; 10 development pairs. No case comes from centre D, whose data may only be used during the challenge.
- Truth
- contours by a program TotalSegmentator (task total) run by us on each image; the MR through a CT synthesised from it
- Licence
- CC BY-NC 4.0 (centres A, B, C, E)
10 pairs for tuning, never tested
HN_1HNA001, HN_1HNA004, HN_1HNA006, HN_1HNA129, HN_1HNA060, HN_1HNC040, HN_1HNC110, HN_1HNC072, HN_1HNC045, HN_1HNC050