Preprint
Jul 2026
FlowPET: Physics-Informed Symplectic Flow Matching for Low-Count PET Reconstruction
Low-count Positron Emission Tomography (PET) reconstruction is severely hindered by the dissipative nature of prevailing generative models, where the inherent phase-space contraction leads to the numerical extinction (``wash-out'') of weak but diagnostically critical lesion signals. To overcome this geometric limitatio...
Zheng Zhang, Hao Tang, Yingying Hu et al.
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