As an emerging technology, positronium lifetime imaging (PLI) using time-of-flight (TOF) positron emission tomography (PET) provides supplemental information reflecting the microenvironment surrounding the tissue, in addition to the radiotracer activities from PET scan. However, due to the finite coincidence resolving time (CRT), typically on the order of 200 – 600 ps, reconstruction of the...
Positron Annihilation Spectroscopy (PAS) has numerous applications in material science such as studies of structural defects, free volumes, porous materials, and their chemical environments. In recent years, the applications of this technique in chemical processes, radiobiology, and medicine have been the subject of research by many researchers [1, 2]. PAS includes Coincidence Doppler...
We modify the positronium imaging method for the Jagiellonian PET (J-PET) scanners, using the simulated data for the decays of a metastable ortho-positronium (o-Ps) based on the pick-off and conversion processes resulting in two 511-keV annihilation photons [1, 2]. An analytical model, embedded into the time-of-flight maximum likelihood expectation maximisation (TOF MLEM) reconstruction...
Publication agreement (CC BY 4.0) Yes
Primary authors
Bożena Zgardzińska (Institute of Physics, Maria Curie-Sklodowska University) Dr Jerzy Mielko (Department of Surgical Oncology, Medical University of Lublin) Ms Katarzyna Gęca (Department of Surgical Oncology, Medical University of Lublin) Marek Gorgol (Maria Curie-Sklodowska University, Institute of Physics, Department of Nuclear...
