Scatter fraction of the J-PET tomography scanner
P. Kowalski, W. Wi\'slicki, L. Raczy\'nski, D. Alfs, T. Bednarski, P., Bia{\l}as, E. Czerwi\'nski, A. Gajos, B. G{\l}owacz, J. Jasi\'nska, D., Kami\'nska, G. Korcyl, T. Kozik, W. Krzemie\'n, E. Kubicz, M. Mohammad, Sz., Nied\'zwiecki, M. Pa{\l}ka, M. Pawlik-Nied\'zwiecka
TL;DR
This paper presents simulation results for the scatter fraction in a novel plastic scintillator-based J-PET PET scanner, highlighting its background characteristics and event selection methods to improve image quality.
Contribution
It introduces the first simulation-based estimation of scatter fraction for the J-PET system, including event suppression techniques and energy threshold analysis.
Findings
Scatter fraction ranges from 37% to 53% depending on energy threshold.
Event selection methods effectively suppress scattered events.
Simulation results inform background correction in J-PET PET imaging.
Abstract
A novel Positron Emission Tomography system, based on plastic scintillators, is being developed by the J-PET collaboration. In this article we present the simulation results of the scatter fraction, representing one of the parameters crucial for background studies defined in the NEMA-NU-2-2012 norm. We elaborate an event selection methods allowing to suppress events in which gamma quanta were scattered in the phantom or underwent the multiple scattering in the detector. The estimated scatter fraction for the single-layer J-PET scanner varies from 37% to 53% depending on the applied energy threshold.
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