Comparison of proton interaction physics models and cross section libraries for proton therapy Monte Carlo simulations by MCNP6.2 code
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00177016%3A_____%2F19%3AN0000077" target="_blank" >RIV/00177016:_____/19:N0000077 - isvavai.cz</a>
Výsledek na webu
<a href="https://doi.org/10.1016/j.radmeas.2019.04.016" target="_blank" >https://doi.org/10.1016/j.radmeas.2019.04.016</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.radmeas.2019.04.016" target="_blank" >10.1016/j.radmeas.2019.04.016</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Comparison of proton interaction physics models and cross section libraries for proton therapy Monte Carlo simulations by MCNP6.2 code
Popis výsledku v původním jazyce
Proton cross-section libraries and interaction models available in the Monte Carlo code MCNP6.2 were tested and compared for energies relevant to proton radiation therapy (100, 150, 226 MeV), and for three different phantom materials. Proton, neutron, and photon characteristics were studied. Primary proton parameters included proton total deposited energy and Bragg peak position. The results varied within ±0.5%. Secondary neutron characteristics included the number of originated secondary neutrons, their average initial energy, energy spectrum, depth-dose curve, radiation weighting factor, neutron equivalent dose inside phantoms, and neutron spectral fluence and ambient dose equivalent outside phantoms. Neutron radiation weighting factor inside a phantom varied within ±8% and neutron equivalent dose typically within ±30%. Large differences were observed in neutron fluence energy spectra both inside and outside a phantom. Secondary photon characteristics consisted of photon equivalent dose inside phantoms. The study demonstrates that the selection of input proton data may have a large impact on the simulated quantity, especially if the intention is to model secondary particles, particularly neutrons.
Název v anglickém jazyce
Comparison of proton interaction physics models and cross section libraries for proton therapy Monte Carlo simulations by MCNP6.2 code
Popis výsledku anglicky
Proton cross-section libraries and interaction models available in the Monte Carlo code MCNP6.2 were tested and compared for energies relevant to proton radiation therapy (100, 150, 226 MeV), and for three different phantom materials. Proton, neutron, and photon characteristics were studied. Primary proton parameters included proton total deposited energy and Bragg peak position. The results varied within ±0.5%. Secondary neutron characteristics included the number of originated secondary neutrons, their average initial energy, energy spectrum, depth-dose curve, radiation weighting factor, neutron equivalent dose inside phantoms, and neutron spectral fluence and ambient dose equivalent outside phantoms. Neutron radiation weighting factor inside a phantom varied within ±8% and neutron equivalent dose typically within ±30%. Large differences were observed in neutron fluence energy spectra both inside and outside a phantom. Secondary photon characteristics consisted of photon equivalent dose inside phantoms. The study demonstrates that the selection of input proton data may have a large impact on the simulated quantity, especially if the intention is to model secondary particles, particularly neutrons.
Klasifikace
Druh
J<sub>SC</sub> - Článek v periodiku v databázi SCOPUS
CEP obor
—
OECD FORD obor
10301 - Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)
Návaznosti výsledku
Projekt
—
Návaznosti
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Ostatní
Rok uplatnění
2019
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Radiation Measurements
ISSN
1350-4487
e-ISSN
—
Svazek periodika
125
Číslo periodika v rámci svazku
1
Stát vydavatele periodika
GB - Spojené království Velké Británie a Severního Irska
Počet stran výsledku
12
Strana od-do
57-68
Kód UT WoS článku
—
EID výsledku v databázi Scopus
2-s2.0-85064914592