Public

Spectral CT — Public Tier

(3 scenes)

Full-access development tier with all data visible.

Measurements (y), ideal forward operator (H), spec ranges, ground truth (x_true), and true mismatch spec.

Load HDF5 → compare reconstruction vs x_true → check consistency → iterate.

Reconstructed signals (x_hat) and corrected spec as HDF5.

✓

True spec visible — use these exact values for Scenario III oracle reconstruction.

Parameter	Spec Range	True Value	Unit
energy_calibration_error	-4.0 – 8.0	2.0	keV
scatter_fraction	-0.2 – 0.4	0.1
detector_crosstalk	-0.1 – 0.2	0.05
beam_hardening	-0.2 – 0.4	0.1

Method: CPU_baseline — Mismatch parameter: nominal

14.88 dB

SSIM 0.2885

11.68 dB

SSIM 0.0479

14.89 dB

SSIM 0.1290

Per-scene breakdown (4 scenes)

Scene	PSNR I	SSIM I	PSNR II	SSIM II	PSNR III	SSIM III
scene_00	14.80	0.2898	11.69	0.0458	14.77	0.1268
scene_01	15.05	0.2857	11.70	0.0477	14.91	0.1282
scene_02	14.99	0.2846	11.68	0.0506	14.96	0.1312
scene_03	14.69	0.2938	11.67	0.0475	14.91	0.1299

#	Method	Score	PSNR	SSIM	Consistency	Trust	Source
1	CTFormer + gradient	0.859	38.05	0.982	0.93	✓ Certified	Li et al., ICCV 2024
2	DiffusionCT + gradient	0.843	37.33	0.979	0.89	✓ Certified	Kazemi et al., ECCV 2024
3	Score-CT + gradient	0.843	36.97	0.978	0.91	✓ Certified	Song et al., NeurIPS 2024
4	DuDoTrans + gradient	0.838	36.03	0.974	0.94	✓ Certified	Wang et al., MLMIR 2022
5	CT-ViT + gradient	0.835	36.26	0.975	0.91	✓ Certified	Guo et al., NeurIPS 2024
6	DOLCE + gradient	0.828	36.4	0.975	0.87	✓ Certified	Liu et al., ICCV 2023
7	Learned Primal-Dual + gradient	0.822	34.78	0.966	0.94	✓ Certified	Adler & Oktem, IEEE TMI 2018
8	FBPConvNet + gradient	0.794	33.4	0.956	0.89	✓ Certified	Jin et al., IEEE TIP 2017
9	PnP-DnCNN + gradient	0.785	32.29	0.946	0.92	✓ Certified	Zhang et al., IEEE TIP 2017
10	RED-CNN + gradient	0.785	32.17	0.944	0.93	✓ Certified	Chen et al., IEEE TMI 2017
11	PnP-ADMM + gradient	0.750	30.43	0.923	0.88	✓ Certified	Venkatakrishnan et al., IEEE GlobalSIP 2013
12	TV-ADMM + gradient	0.706	27.78	0.876	0.89	✓ Certified	Sidky et al., Phys. Med. Biol. 2008
13	FBP + gradient	0.644	24.71	0.793	0.9	✓ Certified	Kak & Slaney, IEEE Press 1988

y H_ideal spec_ranges x_true true_spec

Format: HDF5

Scenes: 3

0.4 × PSNR_norm + 0.4 × SSIM + 0.2 × (1 − ‖y − Ĥx̂‖/‖y‖)

PSNR: 40% SSIM: 40% Consistency: 20%