Results 1 to 10 of about 884 (159)

Enhancement of the EGSnrc code egs_chamber for fast fluence calculations of charged particles

Zeitschrift Fur Medizinische Physik, 2022
Purpose: Simulation of absorbed dose deposition in a detector is one of the key tasks of Monte Carlo (MC) dosimetry methodology. Recent publications (Hartmann and Zink, 2018; Hartmann and Zink, 2019; Hartmann et al., 2021) have shown that knowledge of ...
Klemens Zink, GÜNTHER H Hartmann
exaly   +6 more sources

Monte Carlo Simulation for the Radixact™ Tomotherapy Linac Using EGSnrc [PDF]

Journal of Medical Physics
Purpose: When exact information regarding the treatment head and initial electron beam is available, the Monte Carlo (MC) approach can properly simulate any linear accelerator. However, manufacturers seldom offer information such as the incident electron
Danial Seifi Makrani, Hassan Ali Nedaei, Ghazale Geraily, Alireza Khorami-Moghaddam, Nooshin Banaee, Hussam Jassim   +5 more
doaj   +4 more sources

Macro Monte Carlo dose calculation for very high energy electron (VHEE) radiotherapy. [PDF]

Med Phys
Abstract Background Very high energy electron (VHEE) radiotherapy has gained growing interest owing to its potential to reach deep‐seated targets and induce FLASH effect. Dose calculations can be performed using analytical or Monte Carlo (MC) methods. Analytical approaches enable rapid dose computation but suffer from limited accuracy in heterogeneous ...
Zhu C, Amstutz F, Costantini CM, Volken W, Stampanoni MFM, Manser P, Fix MK.   +6 more
europepmc   +2 more sources

EGSnrc application for IMRT planning

Reports of Practical Oncology and Radiotherapy, 2020
The aim of this study was to describe a detailed instruction of intensity modulated radiotherapy (IMRT) planning simulation using BEAMnrc-DOSXYZnrc code system (EGSnrc package) and present a new graphical user interface based on MATLAB code (The MathWorks) to combine more than one. 3ddose file which were obtained from the IMRT plan.
Mohammad Haekal, Freddy Haryanto, Sitti Yani   +2 more
exaly   +4 more sources

Advancing iris melanoma brachytherapy: Eye plaque models for Monte Carlo simulations and 3D dosimetric datasets. [PDF]

Med Phys
Abstract Purpose To develop and benchmark eye plaque models for Monte Carlo (MC) simulation of iris melanoma brachytherapy and to develop a database of 3D dose distributions for the iris plaques containing 103Pd${}^{103}{\rm Pd}$, 125I${}^{125}{\rm I}$, and 131Cs${}^{131}{\rm Cs}$ seeds.
Djedouani M, Viner A, Fletcher EM, Thomson RM.   +3 more
europepmc   +2 more sources

Evaluation of extrapolation chamber response for surface and buildup dose assessment in radiotherapy photon beams using Monte Carlo simulations. [PDF]

Med Phys
Abstract Background Surface dose assessment is essential in radiotherapy, but accurately measuring doses in the buildup region of megavoltage beams presents significant challenges. Extrapolation chambers are frequently regarded as the most suitable detectors for this purpose. Purpose To establish under what conditions extrapolation chambers can be used
Reis CQM, Muir BR, Nicolucci P, Rogers DWO.   +3 more
europepmc   +2 more sources

Field output correction factors and perturbation factor analysis for novel SunSILICON and SunSILICON P silicon diode detectors. [PDF]

J Appl Clin Med Phys
Abstract Background Field output factor measurements of clinical linear accelerators require detector‐specific corrections, due to the introduction of fluence perturbation effects by non‐water‐equivalent components of applied detectors. Purpose This study aims to determine field output correction factors for novel shielded and unshielded silicon diode ...
Schönfeld AA, Alissa M, Towle D, Murray A, Schönfeld AB, Anders TJ, Alquist E, Evrard O, Rosenwald C, Hildreth J, Flatten V, Wessing G, Habib C, Czarnecki D.   +13 more
europepmc   +2 more sources

Detector response and dose calculation lateral to material interfaces for 6 MV photon beam. [PDF]

J Appl Clin Med Phys
Abstract Background Dose calculation around inhomogeneities is challenging for many algorithms. A validation of dose distributions in these conditions is not straightforward, as detector response close to material interfaces is affected by the non‐equilibrium situation, the changing energy spectrum and the volume effect in a steep dose gradient ...
Ringholz J, Sauer OA, Wegener S.
europepmc   +2 more sources

Design and validation of a deep learning GAN for predicting ¹ ⁷ ⁷Lu dose voxel kernels using GATE/GEANT4 Monte Carlo and IDAC-Dose 2.1 in phantom dosimetry. [PDF]

J Appl Clin Med Phys
Abstract Background The rapid evolution of deep learning (DL), particularly the emergence of generative adversarial networks (GANs) has demonstrated strong potential for generating high‐resolution, voxel‐level dosimetric data. However, GAN‐based approaches have not yet been broadly applied to the generation of tissue‐specific dose voxel kernels (DVKs ...
Kapis OE, Kaniu MI, Giuseppe I, Angeyo HK.   +3 more
europepmc   +2 more sources

Generation of 3D reference dosimetric datasets towards adoption of model-based dose calculations for permanent implant prostate brachytherapy. [PDF]

Med Phys
Abstract Purpose This work aims to create and validate a comprehensive set of test cases and 3D reference dosimetric datasets for model‐based dose calculation algorithms (MBDCAs) in permanent implant prostate brachytherapy. These test cases address the limits of the standard TG‐43 formalism towards improving dose evaluations in prostate cancer ...
Akbari F, Peppa V, Ouellet S, Moghadam N, Oliver S, Gimenez-Alventosa V, Beaulieu L, Vijande J, Thomson RM.   +8 more
europepmc   +2 more sources