Portal de Periódicos da CAPES

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

2010; Elsevier BV; Volume: 96; Issue: 2 Linguagem: Inglês

10.1016/j.radonc.2010.03.016

1879-0887

Olivia Amanda García‐Garduño, José M. Lárraga‐Gutiérrez, Mercedes Rodríguez‐Villafuerte, A. Martı́nez-Dávalos, Miguel Á. Celis,

Radiation Therapy and Dosimetry

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 (<2.7%) for all measured quantities.