Measurement of stray neutron doses inside the treatment room from a proton pencil beam scanning system
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F17%3A00488861" target="_blank" >RIV/61389005:_____/17:00488861 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.ejmp.2017.01.013" target="_blank" >http://dx.doi.org/10.1016/j.ejmp.2017.01.013</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.ejmp.2017.01.013" target="_blank" >10.1016/j.ejmp.2017.01.013</a>
Alternative languages
Result language
angličtina
Original language name
Measurement of stray neutron doses inside the treatment room from a proton pencil beam scanning system
Original language description
Purpose: To measure the environmental doses from stray neutrons in the vicinity of a solid slab phantom as a function of beam energy, field size and modulation width, using the proton pencil beam scanning (PBS) technique. nnMethod: Measurements were carried out using two extended range WENDI-II rem-counters and three tissue equivalent proportional counters. Detectors were suitably placed at different distances around the RW3 slab phantom. Beam irradiation parameters were varied to cover the clinical ranges of proton beam energies (100-220 MeV), field sizes ((2 x 2)-(20 x 20) cm(2)) and modulation widths (0-15 cm). nnResults: For pristine proton peak irradiations, large variations of neutron H*(10)/D were observed with changes in beam energy and field size, while these were less dependent on modulation widths. H*(10)/ D for pristine proton pencil beams varied between 0.04 mu Sv Gy(-1) at beam energy 100 MeV and a (2 x 2) cm(2) field at 2.25 m distance and 90 degrees angle with respect to the beam axis, and 72.3 mu Sv Gy(-1) at beam energy 200 MeV and a (20 x 20) cm(2) field at 1 m distance along the beam axis. nnConclusions: The obtained results will be useful in benchmarking Monte Carlo calculations of proton radiotherapy in PBS mode and in estimating the exposure to stray radiation of the patient. Such estimates may be facilitated by the obtained best-fitted simple analytical formulae relating the stray neutron doses at points of interest with beam irradiation parameters.
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
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physica Medica
ISSN
1120-1797
e-ISSN
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Volume of the periodical
34
Issue of the periodical within the volume
2
Country of publishing house
GB - UNITED KINGDOM
Number of pages
5
Pages from-to
80-84
UT code for WoS article
000395371000010
EID of the result in the Scopus database
2-s2.0-85010549510