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(a) DBT slice from the virtual phantoms used in the DDPM training set. (b) DBT slice generated by unconditional DDPM sampling. Image sizes are 300 × 400 pixels (25.5 mm × 34 mm). (c) Structural NPS of VICTRE simulated and DDPM generated images, averaged over 10 samples for each condition. The power-law fit used the whole frequency range, excluding the zero frequency.
