Page 14 - E-Tez Bülteni Eylül 2025, SAYI 3

Ph.D. THESIS
Department of Physics

Development of Simulation Codes For Spect And Pet
Imaging Systems
Anes HAYDER

Thesis Supervisor: Prof. Dr. Tuncay BAYRAM
Thesis Summary

Single photon emission tomography (SPECT) and positron emission tomography (PET) technologies are widely utilized for
diagnosis in nuclear medicine. These imaging devices provide knowledge at the physiological, metabolic, and molecular levels.
The image quality that is obtained via both SPECT and PET scanners is impacted by the geometric design and physical
properties of component materials. Today, simulation platforms are indispensable tools for the optimization and modification of
devices in the field of nuclear medicine. Simulation methods are not only cost- and time-effective in design but are also used as
effective tools in the development of new imaging systems. In this context, the subject of this thesis is to develop simulation
codes for the dual-head Mediso Any Scan S SPECT at SBU Trabzon Kanuni Training and Research Hospital and the GENERAL
ELECTRIC (GE) Discovery-IQ PET model positron emission tomography (PET) imaging systems at KTU Farabi Hospital
International In this context, GEANT4-based simulation codes were developed for the relevant SPECT and PET systems. The
validity of these codes was verified by comparing them with experimental performance parameters for both SPECT and PET
systems. Furthermore, collimator optimization was performed in addition to intrinsic performance parameters for the modelled
SPECT scanner using various scintillation crystals.
Keywords: SPECT, PET, MonteCarlo, Simulation, GATE, Optimization.