INVESTIGADORES
VALENTE Mauro Andres
congresos y reuniones científicas
Título:
An optimized Monte Carlo (PENELOPE) code for the characterization of gel-layer detectors in radiotherapy
Autor/es:
G. CASTELLANO, D. BRUSA, M. CARRARA, G. GAMBARINI, M. VALENTE
Lugar:
Coimbra, Portugal
Reunión:
Congreso; 10th ISRP (International Symposium on Radiation Physics); 2006
Resumen:
Abstract
Monte Carlo (MC) simulation of radiation transport is considered to be one of the most accurate methods of radiation therapy
dose calculation. A basic requirement for MC treatment planning is a detailed knowledge of the characteristics of radiation
beam generated from medical linear accelerators (LINACs). One of the most important input parameters is the photon fluence
of the beam, usually not determinable experimentally. Thus, an MC simulation code based on the PENELOPE® package was
developed in order to survey the influence of the incident spectrum on the in-phantom dose distributions. Different spectra for
the incident photon fluence have been considered in order to establish the most adequate one. The resulting planned dose
distributions have been compared with those determined experimentally with ionisation chamber measurements and gel
dosimeter layers analyzed with optical technique. The specific gel composition has been implemented in the MC simulation
code. Comparisons between experimental measurements, approximated simulations (water) and specific simulations (gel
composition) have been performed.
Keywords: Monte Carlo simulation; External radiotherapy; Fricke gel dosimetry.Monte Carlo simulation; External radiotherapy; Fricke gel dosimetry.
PACS: 87.53.-j; 87.53.Dq; 02.70.Lq: 87.53.-j; 87.53.Dq; 02.70.Lq