Advanced

Monte Carlo simulation of the photoneutron field in linac radiotherapy treatments with different collimation systems

Zanini, A; Durisi, E; Fasolo, F; Ongaro, C; Visca, L; Nastasi, U; Burn, KW; Scielzo, G; Adler, Jan-Olof LU and Annand, JRM, et al. (2004) In Physics in Medicine and Biology 49(4). p.571-582
Abstract
Bremsstrahlung photon beams produced by linac accelerators are currently the most commonly used method of radiotherapy for tumour treatments. When the photon energy exceeds 10 MeV the patient receives an undesired dose due to photoneutron production in the accelerator head. In the last few decades, new sophisticated techniques such as multileaf collimators have been used for a better definition of the target volume. In this case it is crucial to evaluate the photoneutron dose produced after giant dipole resonance (GDR) excitation of the high Z materials (mainly tungsten and lead) constituting the collimator leaves in view of the optimization of the radiotherapy treatment. A Monte Carlo approach has been used to calculate,the photoneutron... (More)
Bremsstrahlung photon beams produced by linac accelerators are currently the most commonly used method of radiotherapy for tumour treatments. When the photon energy exceeds 10 MeV the patient receives an undesired dose due to photoneutron production in the accelerator head. In the last few decades, new sophisticated techniques such as multileaf collimators have been used for a better definition of the target volume. In this case it is crucial to evaluate the photoneutron dose produced after giant dipole resonance (GDR) excitation of the high Z materials (mainly tungsten and lead) constituting the collimator leaves in view of the optimization of the radiotherapy treatment. A Monte Carlo approach has been used to calculate,the photoneutron dose arising from the GDR reaction during radiotherapy with energetic photon beams. The simulation has been performed using the code MCNP4B-GN which is based on MCNP4B, but includes a new routine GAMMAN to model photoneutron production. Results for the facility at IRCC (Istituto per la Ricerca e la Cura del Cancro) Candiolo (Turin), which is based on 18 MV x-rays from a Varian Clinac 2300 C/D, are presented for a variety of different collimator configurations. (Less)
Please use this url to cite or link to this publication:
author
, et al. (More)
(Less)
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physics in Medicine and Biology
volume
49
issue
4
pages
571 - 582
publisher
IOP Publishing
external identifiers
  • wos:000220391400009
  • pmid:15005166
  • scopus:10744231208
ISSN
1361-6560
DOI
10.1088/0031-9155/49/4/008
language
English
LU publication?
yes
id
d0e5841f-115f-4af7-a433-33f2a6d0ca26 (old id 283197)
date added to LUP
2007-11-07 10:08:33
date last changed
2017-08-27 03:59:44
@article{d0e5841f-115f-4af7-a433-33f2a6d0ca26,
  abstract     = {Bremsstrahlung photon beams produced by linac accelerators are currently the most commonly used method of radiotherapy for tumour treatments. When the photon energy exceeds 10 MeV the patient receives an undesired dose due to photoneutron production in the accelerator head. In the last few decades, new sophisticated techniques such as multileaf collimators have been used for a better definition of the target volume. In this case it is crucial to evaluate the photoneutron dose produced after giant dipole resonance (GDR) excitation of the high Z materials (mainly tungsten and lead) constituting the collimator leaves in view of the optimization of the radiotherapy treatment. A Monte Carlo approach has been used to calculate,the photoneutron dose arising from the GDR reaction during radiotherapy with energetic photon beams. The simulation has been performed using the code MCNP4B-GN which is based on MCNP4B, but includes a new routine GAMMAN to model photoneutron production. Results for the facility at IRCC (Istituto per la Ricerca e la Cura del Cancro) Candiolo (Turin), which is based on 18 MV x-rays from a Varian Clinac 2300 C/D, are presented for a variety of different collimator configurations.},
  author       = {Zanini, A and Durisi, E and Fasolo, F and Ongaro, C and Visca, L and Nastasi, U and Burn, KW and Scielzo, G and Adler, Jan-Olof and Annand, JRM and Rosner, G},
  issn         = {1361-6560},
  language     = {eng},
  number       = {4},
  pages        = {571--582},
  publisher    = {IOP Publishing},
  series       = {Physics in Medicine and Biology},
  title        = {Monte Carlo simulation of the photoneutron field in linac radiotherapy treatments with different collimation systems},
  url          = {http://dx.doi.org/10.1088/0031-9155/49/4/008},
  volume       = {49},
  year         = {2004},
}