Results 81 to 90 of about 2,643 (174)

Quality control of radiotherapy treatment plans with electrons

Brazilian Journal of Radiation Sciences, 2019
In this work the quality of the treatment planning generated by EclipseÒ commercial treatment planning system for electron beams of energy 9 and 20 MeV was verified and their accuracy in the calculation of dose distributions for several clinical ...
Luciana Tourinho Campos, Luiz Ribeiro da Rosa, Delano Valdivino Batista, Delson Braz   +3 more
doaj   +1 more source

Microdosimetry calculations in situ for clinically relevant photon sources and their correlation with the early DNA damage response

Medical Physics, Volume 52, Issue 7, July 2025.
Abstract Background Radiobiological data suggests variations in relative biological effectiveness (RBE) between clinically used photon‐based sources. A microdosimetric formalism using Monte Carlo (MC) methods can mechanistically describe the photon RBE.
Mirta Dumančić, Jonathan Kalinowski, Victor D. Diaz‐Martinez, Joanna Li, Behnaz Behmand, Joseph M. DeCunha, Shirin A. Enger   +6 more
wiley   +1 more source

Image Analysis Metrics in Evaluation of Generative Adversarial Network (GAN) Models Performance in Prediction of 177Lu Dose Voxel Kernels [PDF]

Iranian Journal of Medical Physics
Introduction: In Generative Adversarial Networks (GANs), validation datasets are typically excluded from the adversarial optimization loop, unlike in many conventional machine learning architectures.
KAPIS OTIENO, Kaniu Muchai, Giuseppe Iaccarino, Kalambuka Angeyo   +3 more
doaj   +1 more source

Monte Carlo simulations of geosynchrotron radio emission from CORSIKA-simulated air showers [PDF]

, 2006
We present simulations performed with REAS2, a new Monte Carlo code for the calculation of geosynchrotron radio emission from extensive air showers. The code uses thoroughly tested time-domain radio emission routines in conjunction with a realistic air ...
Engel, R, Huege, T, Ulrich, R
core   +2 more sources

Simulation of correction factor about electronic loss and fluorescence and scattering for W/MO X-rays

The Journal of Engineering, 2019
The Monte–Carlo (MC) program EGSnrc was used to establish the model of low-energy radiation field and low-energy free air ionisation chamber. The electron loss correction factor and the fluorescence scattering correction factor of the molybdenum-filtered
Ji Wang, Shiwei Ren, Jinjie Wu, Siming Guo, Hongjie Li   +4 more
doaj   +1 more source

Positronium Portal into Hidden Sector: A new Experiment to Search for Mirror Dark Matter

, 2010
The understanding of the origin of dark matter has great importance for cosmology and particle physics. Several interesting extensions of the standard model dealing with solution of this problem motivate the concept of hidden sectors consisting of SU(3 ...
, , A Belov, A Rubbia, B. Patt, CDMS-II collaboration, CoGeNT collaboration, E.S.M. Ali, F. Caspers, H.A. Bethe, I. Kobzarev, J. Jaeckel, J. Jaeckel, J.D. Wells, J.L. Feng, L.B. Okun, L.B. Okun, L.D. Landau, M. Felcini S.N. Gninenko, M. Goodsell, M.Yu. Khlopov, P Crivelli, P. Crivelli, R. Barbieri, R. Bernabei ., R. Foot, R. Ohta ., R.B. Metcalf, S Gninenko, S.I. Blinnikov, S.I. Blinnikov, U Gendotti, U. Gendotti, Z. Chacko, Z.G. Berezhiani, Z.K. Silagadze   +35 more
core   +1 more source

Application of variance reduction techniques in EGSnrc based Monte-Carlo method

Science and Technology Development Journal, 2019
Introduction: Monte Carlo (MC) is considered to be the most accurate method to calculate dose distribution in radiation therapy. However, the limitation of MC simulations is the long calculation time to reach the desired statistical uncertainty in the dose calculation as well as in clinical practice.
Loan Thi Hong Truong, Oanh Thi Luong, Tai Thanh Duong, Tuan Duc Hoang   +3 more
openaire   +2 more sources

Quantitative Test of the Evolution of Geant4 Electron Backscattering Simulation

, 2016
Evolutions of Geant4 code have affected the simulation of electron backscattering with respect to previously published results. Their effects are quantified by analyzing the compatibility of the simulated electron backscattering fraction with a large ...
Basaglia, Tullio, Han, Min Cheol, Hoff, Gabriela, Kim, Chan Hyeong, Kim, Sung Hun, Pia, Maria Grazia, Saracco, Paolo   +6 more
core   +1 more source

Implementation of a Tetrahedral Mesh Phantom Geometry Library for EGSnrc

, 2022
The implementation of a general-purpose tetrahedral mesh phantom geometry library for the Monte Carlo radiation transport code EGSnrc is described. Recently, tetrahedral mesh geometries have been proposed as standard reference phantoms to advance the state of the art over rectilinear voxel phantoms.
openaire   +2 more sources

Comparative dosimetry of GammaMed Plus high-dose rate ¹⁹² Ir brachytherapy source

Journal of Medical Physics, 2010
The comparative dosimetry of GammaMed (GM) Plus high-dose rate brachytherapy source was performed by an experiment using 0.1-cc thimble ionization chamber and simulation-based study using EGSnrc code. In-water dose measurements were performed with 0.1-cc
Patel N, Majumdar B, Vijayan V
doaj