The purpose of this study was to investigate comparability of three output prediction models for a compact double-scattered proton therapy system. Two published output prediction models are commissioned for our Mevion S250 proton therapy system. Model A is a correction-based model (Sahoo et al., Med Phys, 2008;35(11):5088-5097) and model B is an analytical model which employs a function of r = ...

Introduction: Spatial dose distribution around the radionuclides sources is required for optimized treatment planning in radioimmunotherapy. At present, the main source of data for cellular dosimetry is the s-values provided by MIRD. However, the MIRD s-values have been calculated based on analytical formula in which no electrons straggling is taken to account. In this study, we used Geant4-DNA...

Introduction: Spatial dose distribution around the radionuclides sources is required for optimized treatment planning in radioimmunotherapy. At present, the main source of data for cellular dosimetry is the s-values provided by MIRD. However, the MIRD s-values have been calculated based on analytical formula in which no electrons straggling is taken to account. In this study, we used Geant4-DNA...

The results of calculating the energy spectra protons transmitted and reflected from thin layers gold are presented. simulation compared with experimental data. It is shown that stopping measurement affected by such factors as multiple scattering, geometry experiment, morphology roughness target. An analysis angular dependence for particles passing through a film makes it possible to obtain inf...

The motion and distribution of electrons in the plasma in the fast-ignition scenario are defined by three equations that describe the spread in the direction of motion (straggling), the spread in the direction perpendicular to the motion (blooming), and the amount of energy lost as the electron travels through the plasma. A program was written that models the distribution of the electrons in th...