With the advent of MRI-guided radiotherapy, reference dosimetry must be thoroughly addressed to account for the effects of the magnetic field on absorbed dose to water and on detector dose response. While Monte Carlo plays an essential role in reference dosimetry, it is also crucial for determining quality correction factors in these new conditions. The Fano cavity test is recognized as fundame...

A method for evaluating the overall uncertainty of alanine EPR transfer dosimetry in the therapeutic dose range is described. The method uses experimental data on EPR signal reproducibility from replicate dosimeters irradiated to low doses (1-5 Gy), estimates of Type B uncertainties, and Monte Carlo simulations of heteroscedastic orthogonal linear regression. A Bruker ECS106 spectrometer and Br...

Introduction: Penumbra is an important property of the radiation beam to obtain a suitable margin surrounding the target volume. Therefore, the precise penumbra width determination in stereotactic radiotherapy is necessary for treatment planning. This study aimed to compare the obtained results of penumbra width by in-house and standard circul...

Purpose The dosimetry procedure by simple superposition accounts only for the self-shielding of the source and does not take into account the attenuation of photons by the applicators. The purpose of this investigation is an estimation of the effects of the tandem and ovoid applicator on dose distribution inside the phantom by MCNP5 Monte Carlo simulations. Material and methods In this study,...

Purpose Interventional radiology techniques cause radiation exposure both to patient and personnel. The dose the operator is usually measured with dosimeters located at specific points above or below lead aprons. aim of this study develop validate two fast Monte Carlo (MC) codes for transport in order improve assessment individual doses interventional radiology. proposed methodology reduces num...

Accelerators such as Graphics Processing Units (GPUs) and Many Integrated Core (MIC) coprocessors are advanced computing devices with outstandingly high computing performance and energy efficiency. The Monte Carlo transport simulation community views these advanced devices as an opportunity to effectively reduce the computation time for performance-critical applications. In this paper, we repor...