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Contribution of secondary particles to the dose in 12C radiotherapy and other heavy ion beams

descriptionPublicationkeyboard_double_arrow_right Article , Journal 13 May 2007Publisher:Oxford University Press (OUP)Journal:Radiation Protection Dosimetry, volume 126, pages 657-659 (issn: 0144-8420, eissn: 1742-3406,

Authors: František Spurný; A. G. Molokanov; Iva Jadrnickova;

doi: 10.1093/rpd/ncm133

pmid: 17504750

Contribution of secondary particles to the dose in 12C radiotherapy and other heavy ion beams

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Abstract

The results of experimental studies performed in a radiotherapy (12)C ion beam with a nominal energy of 500 MeV/amu and in (16)O and (56)Fe ion beams with a nominal energy of 1 GeV/amu have been described. Linear energy transfer (LET) spectra have been established by means of an LET spectrometer based on a chemically etched track detector, and the measured results were also compared with theoretical calculations obtained using the program Stopping and Range of Ions in Matter (SRIM). It was observed that with increasing depth in a beam, the LET spectra are shifted towards higher values of LET; one can also observe an important widening of the spectra along the range, as well as an increasing amount of nuclear reaction products and/or of fragments in the spectra. The relative contribution of these secondary particles to the total absorbed dose was assessed.

Related Organizations

Joint Institute for Nuclear Research
Russian Federation
Institute of Nuclear Physics
Kazakhstan
Joint Institute for Nuclear Research
Russian Federation
Czech Technical University in Prague
Czech Republic
Institute of Nuclear Physics
Kazakhstan

Keywords

Neutrons, Radiotherapy Planning, Computer-Assisted, Reproducibility of Results, Heavy Ion Radiotherapy, Radiotherapy Dosage, Models, Biological, Sensitivity and Specificity, Radiation Protection, Radiation Monitoring, Humans, Computer Simulation, Linear Energy Transfer, Carbon Radioisotopes

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