Erlangen 2026 – scientific programme
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ST: Fachverband Strahlen- und Medizinphysik
ST 6: Poster Session
ST 6.3: Poster
Thursday, March 19, 2026, 14:15–15:45, Redoutensaal
Comparison of Proton Beam Dose Profiles in matRad and Geant4 Simulations — •Mariam Abuladze1, Revaz Shanidze2, Beka Bochorishvili2, Nikoloz Tchikadze3, and Achim Stahl4 — 1Kutaisi International University, Kutaisi, Georgia — 2Tbilisi Stare University, Tbilisi, Georgia — 3Todua Clinic, Tbilisi, Georgia — 4RWTH Aachen University, Aachen, Germany
Cancer treatment is one of the most pressing issues in the modern world, and proton therapy is one of the main methods used to combat this disease. Protons Coulomb Interactions with electrons and nuclei there are well tested methods that describe these interactions very well. In contrast nuclear interactions are more complicated to describe so accurately as Coulomb interactions. In order to account for nuclear interactions in dose calculations, it is necessary to use higher-precision Monte Carlo modeling. In this work we compare doses calculated by two software tools, one uses Monte Carlo calculations the other not. In order to compare calculated doses by these two software tools we study simplest case: homogeneous water medium and monochromatic proton beams. The study investigates absorbed doses obtained using two software tools: matRad and Geant4 and obtained dose distributions and lateral profiles are compared. According to the results besides some differences in dose profiles dose distributions are closer enough according to clinical standards.
Keywords: Geant4; matRad; proton; radiation; comarison