Hidden
CBCT — Hidden Tier
(20 scenes)Fully blind: 20 adversarial 256³ phantoms (extreme complexity: TPMS, reaction-diffusion, multi-metal, depth-6 vascular trees). Strongest mismatch.
What you get
No data download. Algorithm runs server-side on hidden projections.
How to use
Package algorithm as Docker container / Python script accepting projections + geometry, outputting reconstructed volume + corrected spec.
What to submit
Containerized algorithm. Scored server-side against adversarial phantoms.
Parameter Specifications
🔒
True spec hidden — blind evaluation, only ranges available.
| Parameter | Spec Range | Unit |
|---|---|---|
| source_offset_x | -0.5 – 3.5 | mm |
| source_offset_z | -0.5 – 2.5 | mm |
| detector_tilt | -0.15 – 0.85 | deg |
| detector_shift_u | -0.8 – 5.2 | px |
| beam_hardening | 0.045 – 0.195 | |
| scatter_fraction | 0.03 – 0.13 |
Hidden Tier Leaderboard
| # | Method | Score | PSNR | SSIM | Consistency | Trust | Source |
|---|---|---|---|---|---|---|---|
| 1 | DuDoTrans + gradient | 0.750 | 31.51 | 0.937 | 0.8 | ✓ Certified | Wang et al., IEEE TMI 2022 |
| 2 | CTFormer + gradient | 0.744 | 30.74 | 0.927 | 0.83 | ✓ Certified | Wang et al., MICCAI 2023 |
| 3 | DiffusionCBCT + gradient | 0.658 | 26.72 | 0.851 | 0.75 | ✓ Certified | Gao et al., Med. Phys. 2024 |
| 4 | DuDoNet + gradient | 0.655 | 26.68 | 0.85 | 0.74 | ✓ Certified | Lin et al., CVPR 2019 |
| 5 | Learned Primal-Dual + gradient | 0.649 | 25.54 | 0.819 | 0.83 | ✓ Certified | Adler & Oktem, IEEE TMI 2018 |
| 6 | FDK + gradient | 0.625 | 24.41 | 0.783 | 0.84 | ✓ Certified | Feldkamp et al., J. Opt. Soc. Am. A 1984 |
| 7 | Metal-AR-Net + gradient | 0.622 | 24.54 | 0.787 | 0.81 | ✓ Certified | Zhang & Yu, IEEE TMI 2018 |
| 8 | TV-ADMM + gradient | 0.583 | 22.63 | 0.716 | 0.85 | ✓ Certified | Boyd et al., Found. Trends 2011 |
| 9 | FBPConvNet + gradient | 0.576 | 22.68 | 0.718 | 0.81 | ✓ Certified | Jin et al., IEEE TIP 2017 |
Dataset
Scenes: 20
Scoring Formula
0.4 × PSNR_norm + 0.4 × SSIM + 0.2 × (1 − ‖y − Ĥx̂‖/‖y‖)
PSNR: 40%
SSIM: 40%
Consistency: 20%