Small photon beam measurements using radiochromic film and Monte Carlo simulations in a water phantom

Abstract This work reports the use of both GafChromic EBT film immersed in a water phantom and Monte Carlo (MC) simulations for small photon beam stereotactic radiosurgery dosimetry. Circularly collimated photon beams with diameters in the 4–20 mm range of a dedicated 6 MV linear accelerator (Novali...

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Veröffentlicht in:	Radiotherapy and oncology 2010-08, Vol.96 (2), p.250-253
Hauptverfasser:	García-Garduño, Olivia A, Lárraga-Gutiérrez, José M, Rodríguez-Villafuerte, Mercedes, Martínez-Dávalos, Arnulfo, Celis, Miguel A
Format:	Artikel
Sprache:	eng
Schlagworte:	Film dosimetry Film Dosimetry - methods Hematology, Oncology and Palliative Medicine Monte Carlo Monte Carlo Method Phantoms, Imaging Photons Radiometry - methods Small photon beams Stereotactic radiosurgery Water
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Zusammenfassung:	Abstract This work reports the use of both GafChromic EBT film immersed in a water phantom and Monte Carlo (MC) simulations for small photon beam stereotactic radiosurgery dosimetry. Circularly collimated photon beams with diameters in the 4–20 mm range of a dedicated 6 MV linear accelerator (Novalis®, BrainLAB, Germany) were used to perform off-axis ratios, tissue maximum ratios and total scatter factors measurements, and MC simulations. GafChromic EBT film data show an excellent agreement with MC results (
ISSN:	0167-8140 1879-0887
DOI:	10.1016/j.radonc.2010.03.016