Therapeutic dose simulation of a 6 MV Varian Linac photon beam using GEANT4

E. Salama, A. S. Ali, N. E. Khaled, A. Radi

Research output: Contribution to journalArticle

Abstract

A developed program in C++ language using GEANT4 libraries was used to simulate the gantry of a 6 MV high energy photon linear accelerator (Linac). The head of a clinical linear accelerator based on the manufacturer's detailed information is simulated. More than 2× 109 primary electrons are used to create the phase space file. Evaluation of the percentage depth dose (PDD) and flatness symmetry (lateral dose profiles) in water phantom were performed. Comparisons between experimental and simulated data were carried out for three field sizes; 5 × 5, 10 × 10 and 15 × 15 cm2. A relatively good agreement appeared between computed and measured PDD. Electron contamination and spatial distribution for both photons and electrons in the simulated beam are evaluated. Moreover, the obtained lateral dose profiles at 15, 50, and 100 mm depth are compatible with the measured values. The obtained results concluded that, GEANT4 code is a promising applicable Monte Carlo program in radiotherapy applications.

Original languageEnglish
Article numberT10008
JournalJournal of Instrumentation
Volume10
Issue number10
DOIs
Publication statusPublished - Oct 27 2015

Fingerprint

Linear accelerators
photon beams
linear accelerators
Accelerator
Dose
Photon
Photons
dosage
Electrons
Electron
Percentage
Lateral
Simulation
simulation
Radiotherapy
gantry cranes
Spatial distribution
Dosimetry
electrons
Flatness

Keywords

  • Accelerator modelling and simulations (multi-particle dynamics
  • Instrumentation for particle accelerators and storage rings - high energy (linear accelerators synchrotrons)
  • Interaction of radiation with matter
  • Radiotherapy concepts
  • single-particle dynamics)

ASJC Scopus subject areas

  • Instrumentation
  • Mathematical Physics

Cite this

Therapeutic dose simulation of a 6 MV Varian Linac photon beam using GEANT4. / Salama, E.; Ali, A. S.; Khaled, N. E.; Radi, A.

In: Journal of Instrumentation, Vol. 10, No. 10, T10008, 27.10.2015.

Research output: Contribution to journalArticle

@article{39989202e0934cabb3e6081bfdec0c8d,
title = "Therapeutic dose simulation of a 6 MV Varian Linac photon beam using GEANT4",
abstract = "A developed program in C++ language using GEANT4 libraries was used to simulate the gantry of a 6 MV high energy photon linear accelerator (Linac). The head of a clinical linear accelerator based on the manufacturer's detailed information is simulated. More than 2× 109 primary electrons are used to create the phase space file. Evaluation of the percentage depth dose (PDD) and flatness symmetry (lateral dose profiles) in water phantom were performed. Comparisons between experimental and simulated data were carried out for three field sizes; 5 × 5, 10 × 10 and 15 × 15 cm2. A relatively good agreement appeared between computed and measured PDD. Electron contamination and spatial distribution for both photons and electrons in the simulated beam are evaluated. Moreover, the obtained lateral dose profiles at 15, 50, and 100 mm depth are compatible with the measured values. The obtained results concluded that, GEANT4 code is a promising applicable Monte Carlo program in radiotherapy applications.",
keywords = "Accelerator modelling and simulations (multi-particle dynamics, Instrumentation for particle accelerators and storage rings - high energy (linear accelerators synchrotrons), Interaction of radiation with matter, Radiotherapy concepts, single-particle dynamics)",
author = "E. Salama and Ali, {A. S.} and Khaled, {N. E.} and A. Radi",
year = "2015",
month = "10",
day = "27",
doi = "10.1088/1748-0221/10/10/T10008",
language = "English",
volume = "10",
journal = "Journal of Instrumentation",
issn = "1748-0221",
publisher = "IOP Publishing Ltd.",
number = "10",

}

TY - JOUR

T1 - Therapeutic dose simulation of a 6 MV Varian Linac photon beam using GEANT4

AU - Salama, E.

AU - Ali, A. S.

AU - Khaled, N. E.

AU - Radi, A.

PY - 2015/10/27

Y1 - 2015/10/27

N2 - A developed program in C++ language using GEANT4 libraries was used to simulate the gantry of a 6 MV high energy photon linear accelerator (Linac). The head of a clinical linear accelerator based on the manufacturer's detailed information is simulated. More than 2× 109 primary electrons are used to create the phase space file. Evaluation of the percentage depth dose (PDD) and flatness symmetry (lateral dose profiles) in water phantom were performed. Comparisons between experimental and simulated data were carried out for three field sizes; 5 × 5, 10 × 10 and 15 × 15 cm2. A relatively good agreement appeared between computed and measured PDD. Electron contamination and spatial distribution for both photons and electrons in the simulated beam are evaluated. Moreover, the obtained lateral dose profiles at 15, 50, and 100 mm depth are compatible with the measured values. The obtained results concluded that, GEANT4 code is a promising applicable Monte Carlo program in radiotherapy applications.

AB - A developed program in C++ language using GEANT4 libraries was used to simulate the gantry of a 6 MV high energy photon linear accelerator (Linac). The head of a clinical linear accelerator based on the manufacturer's detailed information is simulated. More than 2× 109 primary electrons are used to create the phase space file. Evaluation of the percentage depth dose (PDD) and flatness symmetry (lateral dose profiles) in water phantom were performed. Comparisons between experimental and simulated data were carried out for three field sizes; 5 × 5, 10 × 10 and 15 × 15 cm2. A relatively good agreement appeared between computed and measured PDD. Electron contamination and spatial distribution for both photons and electrons in the simulated beam are evaluated. Moreover, the obtained lateral dose profiles at 15, 50, and 100 mm depth are compatible with the measured values. The obtained results concluded that, GEANT4 code is a promising applicable Monte Carlo program in radiotherapy applications.

KW - Accelerator modelling and simulations (multi-particle dynamics

KW - Instrumentation for particle accelerators and storage rings - high energy (linear accelerators synchrotrons)

KW - Interaction of radiation with matter

KW - Radiotherapy concepts

KW - single-particle dynamics)

UR - http://www.scopus.com/inward/record.url?scp=84947087763&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84947087763&partnerID=8YFLogxK

U2 - 10.1088/1748-0221/10/10/T10008

DO - 10.1088/1748-0221/10/10/T10008

M3 - Article

VL - 10

JO - Journal of Instrumentation

JF - Journal of Instrumentation

SN - 1748-0221

IS - 10

M1 - T10008

ER -