Simulation and experimental verification of ambient neutron doses in a pencil beam scanning proton therapy room as a function of treatment plan parameters
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F22%3A00564998" target="_blank" >RIV/61389005:_____/22:00564998 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.3389/fonc.2022.903537" target="_blank" >https://doi.org/10.3389/fonc.2022.903537</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3389/fonc.2022.903537" target="_blank" >10.3389/fonc.2022.903537</a>
Alternative languages
Result language
angličtina
Original language name
Simulation and experimental verification of ambient neutron doses in a pencil beam scanning proton therapy room as a function of treatment plan parameters
Original language description
Out-of-field patient doses in proton therapy are dominated by neutrons. Currently, they are not taken into account by treatment planning systems. There is an increasing need to include out-of-field doses in the dose calculation, especially when treating children, pregnant patients, and patients with implants. In response to this demand, this work presents the first steps towards a tool for the prediction of out-of-field neutron doses in pencil beam scanning proton therapy facilities. As a first step, a general Monte Carlo radiation transport model for simulation of out-of-field neutron doses was set up and successfully verified by comparison of simulated and measured ambient neutron dose equivalent and neutron fluence energy spectra around a solid water phantom irradiated with a variation of different treatment plan parameters. Simulations with the verified model enabled a detailed study of the variation of the neutron ambient dose equivalent with field size, range, modulation width, use of a range shifter, and position inside the treatment room. For future work, it is planned to use this verified model to simulate out-of-field neutron doses inside the phantom and to verify the simulation results by comparison with previous in-phantom measurement campaigns. Eventually, these verified simulations will be used to build a library and a corresponding tool to allow assessment of out-of-field neutron doses at pencil beam scanning proton therapy facilities.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
30224 - Radiology, nuclear medicine and medical imaging
Result continuities
Project
<a href="/en/project/EF15_003%2F0000481" target="_blank" >EF15_003/0000481: Research Center of Cosmic Rays and Radiation Events in the Atmosphere</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Frontiers in Oncology
ISSN
2234-943X
e-ISSN
2234-943X
Volume of the periodical
12
Issue of the periodical within the volume
SEP
Country of publishing house
CH - SWITZERLAND
Number of pages
22
Pages from-to
903537
UT code for WoS article
000884350700001
EID of the result in the Scopus database
2-s2.0-85136947416