Photon beams produced by a cobalt-60 Unit and a 6 MV linear accelerator equipped with stereotactic collimators were used to investigate some dosimetric properties of a radioluminescent dosimeter based on a Ce-doped optical fibre. The stability of the signal with increasing the irradiation time, enabled a reliable and real-time measurement of the dose rate. The methods, recently developed, of optical coupling, light collection and signal processing allowed to achieve a satisfactory signal to noise ratio, a good reproducibility and a linear dose–response. The punctual dimension of the doped fibre diameter was exploited in the characterization of stereotactic fields, providing results in agreement with those obtained using a micro-ionization chamber.
|Titolo:||Ce-doped optical fiber as radioluminescent dosimeter in radiotherapy|
|Parole Chiave:||Optical fibre; Radioluminescence; Radiotherapy; Stereotactic|
|Data di pubblicazione:||2008|
|Digital Object Identifier (DOI):||10.1016/j.radmeas.2008.01.031|
|Appare nelle tipologie:||01 - Articolo su periodico|