Study of "A method to enhance coincidence time resolution with applications for medical imaging systems (TOF/PET)". (January 2015)

• Record Type: Journal Article
• Authors: Bikit, I.; Mrdja, D.; Bikit, K.; Slivka, J.; Forkapic, S.
• Is Part Of: Radiation measurements. Volume 72(2015:Jan.)
• Page Start: 95
• Page End: 99
• Publication Date: 2015-01
• Subjects: Coincidence timing -- Gamma-ray backscattering -- Monte-Carlo simulations; Nuclear emulsions -- Periodicals; Particle tracks (Nuclear physics) -- Periodicals; Thermoluminescence -- Periodicals; Cosmic rays -- Periodicals; Radiation -- Measurement -- Periodicals; Radiometry -- Periodicals; Radiation Monitoring -- Periodicals; Émulsions nucléaires -- Périodiques; Particules (Physique nucléaire) -- Traces -- Périodiques; Thermoluminescence -- Périodiques; Rayonnement cosmique -- Périodiques; Radiométrie -- Périodiques; 539.77
• DOI: 10.1016/j.radmeas.2014.12.004
• Languages: English
• ISSNs: 1350-4487

Abstract

Abstract: The physics of true coincidence production by the Cs-137 source is elaborated. When the single-photon emitting Cs-137 source is sandwiched between two detectors of a coincidence system, the scattering of 662 keV gamma-rays between the detectors ("cross-talk") will result in true coincidence events. The results of Ermis et al. (2014) on that issue are critically analyzed. Our Geant-4 simulations did not support most of the results of this work. Thus, the possibility of coincidence time resolution improvement by the Cs-137 source is challenged. Highlights: The coincidence events by a non-cascade gamma source are described. GEANT4 simulations of the cross talk between detectors have been performed. The feasibility of the Cs-137 source application for timing studies is explored.