Generalizable preconditioning strategies for MAP PET reconstruction using Poisson likelihood
IntroductionThe positron emission tomography (PET) problem with Poisson log-likelihood is notoriously ill-conditioned. This stems from its dependence on the inverse of the measured counts and the square of the attenuation factors, causing the diagonal of the Hessian to span over 5 orders of magnitud...
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| Autors principals: | , , |
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| Format: | Artigo |
| Idioma: | Inglês |
| Publicat: |
Frontiers Media S.A.
2025-12-01
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| Col·lecció: | Frontiers in Nuclear Medicine |
| Matèries: | |
| Accés en línia: | https://www.frontiersin.org/articles/10.3389/fnume.2025.1661332/full |
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