Spectral fluence of neutrons generated by radiotherapeutic linacs
Language English Country England, Great Britain Media print-electronic
Document type Comparative Study, Evaluation Study, Journal Article, Research Support, Non-U.S. Gov't
PubMed
24925899
DOI
10.1093/rpd/ncu192
PII: ncu192
Knihovny.cz E-resources
- MeSH
- Equipment Failure Analysis MeSH
- Particle Accelerators instrumentation MeSH
- Radiation Dosage MeSH
- Computer-Aided Design MeSH
- Equipment Design MeSH
- Monte Carlo Method MeSH
- Neutrons * MeSH
- Computer Simulation MeSH
- Scattering, Radiation MeSH
- Radiosurgery instrumentation MeSH
- Radiometry instrumentation methods MeSH
- Models, Statistical * MeSH
- Publication type
- Journal Article MeSH
- Evaluation Study MeSH
- Research Support, Non-U.S. Gov't MeSH
- Comparative Study MeSH
Spectral fluences of neutrons generated in the heads of the radiotherapeutic linacs Varian Clinac 2100 C/D and Siemens ARTISTE were measured by means of the Bonner spheres spectrometer whose active detector of thermal neutrons was replaced by an activation detector, i.e. a tablet made of pure manganese. Measurements with different collimator settings reveal an interesting dependence of neutron fluence on the area defined by the collimator jaws. The determined neutron spectral fluences were used to derive ambient dose equivalent rate along the treatment coach. To clarify at which components of the linac neutrons are mainly created, the measurements were complemented with MCNPX calculations based on a realistic model of the Varian Clinac.
Czech Metrology Institute Prague 10 CZ 102 00 Czech Republic
Proton Therapy Center Budínova 2 Prague 8 CZ 180 00 Czech Republic
Thomayer's Hospital Vídeňská 80 Prague 4 CZ 140 59 Czech Republic
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