Dose Calculations of SPECT Simulations on Dynamical Targets with GATE / GEANT4

Simulations of SPECT studies have been taken attention with the fact that more accurate results can be constructed in medical imaging with developing computing techniques. As a result, one can visualize new ideas or improvements with the help of medical simulations before applying on real incidents for clinical purposes acquiring high level of statistics without harming live tissues. In this study, we focused on the capability of GATE (a simulation toolkit for PET & SPECT) that is developed under GEANT4 simulation framework and applications on the effects such as activity degradations, displacements and overlapping of the tissues. Energy histograms and dose calculations are obtained by using built-in tissues and analyzing virtual data using ROOT analysis software. Results show the magnitudes of effects that may have a significant disturbance on SPECT images and their dependence on spesific parameters