A diffusion-posterior-sampling method jointly reconstructs activity and attenuation in 3-D PET from emission data alone, using a wavelet diffusion prior trained on paired images.
Joint material decomposition and scatter estimation for spectral CT
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Joint Reconstruction of Activity and Attenuation in PET by Diffusion Posterior Sampling in Wavelet Coefficient Space
A diffusion-posterior-sampling method jointly reconstructs activity and attenuation in 3-D PET from emission data alone, using a wavelet diffusion prior trained on paired images.