40 citations · 85 across the 9 of their papers we have counts for
9 papers
Output and correction factors measured and calculated in very small circular fields for microDiamond and EFD-3G detectors
Eyad Alhakeem, Sergei Zavgorodni
The purpose of this work was to obtain output correction factors for microDiamond and EFD-3G detectors in very small (less than 5 mm) circular fields. We also investigated the impa…
Evaluation of latent variances in Monte Carlo dose calculations with Varian TrueBeam photon phase-spaces used as a particle source
Eyad Alhakeem, Sergei Zavgorodni
Purpose: To evaluate the latent variance (LV) of TrueBeam photon phase-space files (PSF) for open 10x10 and small fields. Methods: BEAMnrc/DOSXYZnrc was used to transport par…
Monte Carlo simulation of MLC-shaped TrueBeam electron fields benchmarked against measurement
Samantha A. M. Lloyd, Isabelle M. Gagne, Sergei Zavgorodni
Modulated electron radiotherapy (MERT) and combined, modulated photon/electron radiotherapy (MPERT) have received increased research attention, having shown capacity for reduced lo…
Generalized coordinate transformations for Monte Carlo (DOSXYZnrc and VMC++) verifications of DICOM compatible radiotherapy treatment plans
Richard M. Schmitz, Oliver Telfer, Reid W. Townson +1
The International Electrotechnical Commission (IEC) has previously defined standard rotation operators for positive gantry, collimator and couch rotations for the radiotherapy DICO…
Pre-treatment radiotherapy dose verification using Monte Carlo doselet modulation in a spherical phantom
Reid W Townson, Sergei Zavgorodni
Due to the increasing complexity of radiotherapy delivery, accurate dose verification has become an essential part of the clinical treatment process. The purpose of this work was t…
Monitor backscatter factors for the Varian 21EX and TrueBeam linear accelerators: measurements and Monte Carlo modeling
Sergei Zavgorodni, Eyad Alhakeem, Reid Townson
Purpose/Objective: Backscattered radiation (BSR) into linac monitor chamber has to be accounted for in radiotherapy dose calculations. In Monte Carlo (MC) calculations, the BSR can…
Monte Carlo investigation into feasibility and dosimetry of flat Flattening Filter Free beams
Sergei Zavgorodni
Flattening filter free (FFF) beams due to their non-uniformity, are sub-optimal for larger field sizes. The purpose of this study was to investigate the incident electron beam dist…
GPU-based Monte Carlo radiotherapy dose calculation using phase-space sources
Reid Townson, Xun Jia, Zhen Tian +3
A novel phase-space source implementation has been designed for GPU-based Monte Carlo dose calculation engines. Due to the parallelized nature of GPU hardware, it is essential to s…
Vega library for processing DICOM data required in Monte Carlo verification of radiotherapy treatment plans
C. Locke, S. Zavgorodni
Monte Carlo (MC) methods provide the most accurate to-date dose calculations in heterogeneous media and complex geometries, and this spawns increasing interest in incorporating MC…