Monte Carlo simulation of the photoneutron field in linac radiotherapy treatments with different collimation systems
(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)
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- author
- organization
- publishing date
- 2004
- 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
- 2016-04-01 11:59:15
- date last changed
- 2022-02-26 00:13:32
@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}}, doi = {{10.1088/0031-9155/49/4/008}}, volume = {{49}}, year = {{2004}}, }