Public

Brachytherapy Imaging — 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
source_position_error	-0.4 – 0.8	0.2	mm
attenuation_coefficient	0.19 – 0.22	0.205	1/cm
detector_gain_drift	0.99 – 1.02	1.005	-
scatter_fraction	0.13 – 0.19	0.16	-

Method: CPU_baseline — Mismatch parameter: nominal

17.61 dB

SSIM 0.3262

13.04 dB

SSIM 0.0468

16.34 dB

SSIM 0.1224

Per-scene breakdown (4 scenes)

Scene	PSNR I	SSIM I	PSNR II	SSIM II	PSNR III	SSIM III
scene_00	16.58	0.3251	12.51	0.0447	15.93	0.1214
scene_01	18.88	0.3252	13.74	0.0480	17.02	0.1162
scene_02	18.30	0.3298	13.37	0.0496	16.55	0.1259
scene_03	16.68	0.3248	12.53	0.0450	15.85	0.1262

#	Method	Score	PSNR	SSIM	Consistency	Trust	Source
1	DiffusionSeed + gradient	0.849	38.22	0.983	0.87	✓ Certified	Gao et al., Med. Phys. 2024
2	CTFormer + gradient	0.837	36.99	0.978	0.88	✓ Certified	Wang et al., MICCAI 2023
3	Learned Primal-Dual + gradient	0.830	35.38	0.97	0.94	✓ Certified	Adler & Oktem, IEEE TMI 2018
4	DuDoTrans + gradient	0.825	35.97	0.973	0.88	✓ Certified	Wang et al., IEEE TMI 2022
5	RED-CNN + gradient	0.809	34.05	0.961	0.92	✓ Certified	Chen et al., IEEE TMI 2017
6	Metal-AR-Net + gradient	0.802	33.99	0.961	0.89	✓ Certified	Zhang & Yu, IEEE TMI 2018
7	FBPConvNet + gradient	0.771	31.89	0.941	0.88	✓ Certified	Jin et al., IEEE TIP 2017
8	TV-ADMM + gradient	0.733	29.3	0.906	0.89	✓ Certified	Boyd et al., Found. Trends Mach. Learn. 2011
9	FDK + gradient	0.672	26.03	0.833	0.89	✓ Certified	Feldkamp et al., J. Opt. Soc. Am. A 1984

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%