Hamiltonian dynamics for stochastic reconstruction in emission tomography - Theodoros Leontiou; Anna Frixou; Elena Ttofi; Charalambos Chrysostomou; Yiannis Parpottas; Konstantinos Michael; Savvas Frangos; Efstathios Stiliaris; Costas N Papanicolas (Physics in Medicine & Biology, 2026)