Berlin 2024 – wissenschaftliches Programm
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ST: Fachverband Strahlen- und Medizinphysik
ST 5: Poster Session
ST 5.6: Poster
Mittwoch, 20. März 2024, 11:00–12:30, Poster A
Comparison of the proton therapy doses obtained with the Geant4 and matRAD — •Mariam Abuladze2, Achim Stahl1, Ronja Hetzel1, and Revaz Shanidze2,3 — 1RWTH Aachen University, Aachen, Germany — 2Kutaisi International University, Kutaisi, Georgia — 3Ivane Javakhishvili Tbilisi State University, Tbilisi, Georgia
Proton therapy is a high-quality radiation therapy that uses a proton beam to irradiate cancer tissue. The advantage of this type of treatment is a highly conformal dose deposition due to the presence of the Bragg peak. The treatment planning systems (TPS) which are used for calculation of delivered doses in radiation therapy are usually based on semi-analytical methods and hence are less precise than Monte-Carlo technique. GEANT4 is the most well-developed software platform for the simulation of the passage of particles through matter using Monte Carlo methods. It can calculate delivered doses with high accuracy, by considering all the possible particle matter interactions which can occur during proton passage into tissue. MatRad is well-known open-source TPS software for intensity-modulated photon, proton, and carbon ion therapy, which is actively used for educational and research purposes. In this work we compared dose distributions in matRad and Geant4 by executing matRad with the help of Octave platform which makes it possible to extract beam parameters generated by matRad optimization algorithms and then simulating it in Geant4 monte-carlo simulation for the same patient phantom and see how DVH obtained from both simulations differ.
Keywords: proton; matrad; Geant4; dose; DVH