Perturbations of radiation field caused by titanium dental implants in pencil proton beam therapy
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F18%3A00496732" target="_blank" >RIV/61389005:_____/18:00496732 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1088/1361-6560/aae656" target="_blank" >http://dx.doi.org/10.1088/1361-6560/aae656</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1088/1361-6560/aae656" target="_blank" >10.1088/1361-6560/aae656</a>
Alternative languages
Result language
angličtina
Original language name
Perturbations of radiation field caused by titanium dental implants in pencil proton beam therapy
Original language description
The aim of this study was to investigate the absorbed dose and the linear energy transfer (LET) of a scanning proton pencil beam at the Proton Therapy Center Czech, applied to phantoms containing metal implants. nnWe investigated two different phantoms composed of commonly used metals with a known chemical composition. Two rectangular phantoms consisted of water-equivalent environment material with a 65 mm thickness surrounding the 2, 5,10 and 15 mm inserts of grade-2 and grade-5 Titanium. Track-etched detectors (TEDs) were placed behind the phantoms to gather the data. The measured LET spectra behind the implants were compared with Monte Carlo simulations using the Geant4 toolkit, version 10.03.p01. The simulations were used to provide additional information regarding the contribution of each type of particles to the LET spectra (protons, alpha particles, deuteron, neutrons, photons, and electrons) and to estimate the LET spectra above the TED' s detection threshold. We used two different beam energies to study the most pertinent irradiation scenarios, one in the Bragg curve plateau and one at the maximum. nnThe measurement of the LET spectra behind phantoms irradiated with a proton beam in the plateau region of the Bragg curve led to the detection of numerous particles with a very high LET. Lateral dose enhancement at the border between implants and the plastic material was detected when the phantoms were exposed to a proton beam and the data were recorded in the Bragg peak maximum. In this area, the dose increased 13 times for grade-2 Ti and 12 times for grade-5 Ti. nnThe performed experimental study highlights the effect of dental implants on the LET spectra and absorbed dose when a proton pencil beam is crossing high-density titanium.
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
10304 - Nuclear physics
Result continuities
Project
<a href="/en/project/EF16_013%2F0001677" target="_blank" >EF16_013/0001677: Facility for Antiproton and Ion Research - participation of the Czech Republic - OP</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physics in Medicine and Biology
ISSN
0031-9155
e-ISSN
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Volume of the periodical
63
Issue of the periodical within the volume
21
Country of publishing house
GB - UNITED KINGDOM
Number of pages
13
Pages from-to
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UT code for WoS article
000448766100005
EID of the result in the Scopus database
2-s2.0-85055616557