Investigation of photon interaction parameters in Human Body Tissues using GAMOS, FLUKA, and XCOM Studies

Abstract

This study aims to evaluate different photon interaction parameters of human body organs at nine photon energies (0.021 keV–1.25 MeV) using GAMOS and FLUKA Monte Carlo codes. The Mass attenuation coefficients, Mean Free Path, Half Value Layer, Tenth Value Layer, and Mass absorption coefficients of the breast, lung, kidney, pancreas, liver, eye lens, thyroid, brain, ovary, heart, large intestine blood, skin, spleen, muscle, and cortical bone were investigated and compared against the standard values available from the tables of XCOM database. This comparison demonstrated a good agreement, with all calculated values deviating less than 6 %. In addition, the values obtained with the GAMOS code were similar to those obtained using the FLUKA code. These comparisons indicate very good agreement and revealed that both FLUKA and GAMOS codes can be used as a computational tool for determining the photon interaction parameters of any material and also different energies, whose data are not available in the literature. • Comprehensive evaluation of photon interaction in human tissues using Monte Carlo method. • Values of ( μ ρ ) , ( μ e n ρ ) , MFP, HVL and TVL were determined using GAMOS and FLUKA simulations and compared with XCOM values. • Good agreement between GAMOS and FLUKA codes with XCOM database values was observed. • Simulated data are useful in nuclear medicine applications, such as diagnostic imaging protocols and radiotherapy planning.