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Afonso, L.C. ; Schöfer, F.H. ; Hoeschen, C. ; Caldas, L.V.E.*

Dose sensitivity enhancement on polymer gel with suspended gold particles.

Nukleonika 57, 467-472 (2012)
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The presence of high Z material adjacent to soft tissue, when submitted to irradiation, enhances locally the absorbed dose in these soft tissues. Such an effect occurs due to the outscattering of photoelectrons from the high Z material. Polymer gel (PG) dosimeters were used to investigate this effect. Analytic calculations to estimate the dose enhancement were performed. Samples containing a polymer gel with 0.005 gAu/gPG and a pure polymer gel were irradiated using an X-ray beam produced by 150 kV, filtered with 4 mm Al and 5 mm Cu, which resulted in an approximately 20% greater absorbed dose in the samples with gold in comparison to those with the pure polymer gel. The analytic calculations resulted in a dose enhancement factor of approximately 30% for the gold concentration of 0.005 gAu/gPG.
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Publikationstyp Artikel: Journalartikel
Dokumenttyp Wissenschaftlicher Artikel
Schlagwörter polymer gel; dose enhancement; radiation therapy; X-rays; Nanoparticles
ISSN (print) / ISBN 0029-5922
e-ISSN 1508-5791
Zeitschrift Nukleonika
Quellenangaben Band: 57, Heft: 4, Seiten: 467-472 Artikelnummer: , Supplement: ,
Verlag Institute of Nuclear Chemistry and Technology (INCT)
Begutachtungsstatus Peer reviewed