DocumentCode :
86253
Title :
Dosimetric Study of Therapeutic Beams Using a Homogeneous Scintillating Fiber Layer
Author :
Lamanna, E. ; Fiorillo, A.S. ; Gallo, Alessandro ; Trapasso, A. ; Caroleo, R. ; Brancaccio, R. ; Barca, G. ; Carnevale, S. ; Castrovillari, F. ; Siaka, Y.F.T.
Author_Institution :
Med. Fac., Magna Graecia Univ., Catanzaro, Italy
Volume :
60
Issue :
1
fYear :
2013
fDate :
Feb. 2013
Firstpage :
109
Lastpage :
114
Abstract :
Currently, radiotherapy with electrons and photons beams is the most common approach in health care facilities; it allows widespread use of technology. Only a fast and accurate verification of the dose characteristics of the beams provides a safe and effective use of the methodology. We have designed, built and tested a new instrument based on a layer of square scintillating fibers of 0.5 mm thickness that can run a scan of the beam. The system provides the dosage profiles, related to a plane orthogonal to the beam axis at a fixed depth. The device was tested with a photon beam of 6 MV delivered by a linear accelerator Varian Clinac DHX 2100. The data collected were processed for the tomographic reconstruction of the dose by means of the FBP (filtered back projection) algorithm with different filters. An iterative reconstruction algorithm was also tested. In this paper, the results are presented and suggestions for future developments are made.
Keywords :
dosimetry; iterative methods; position sensitive particle detectors; radiation therapy; solid scintillation detectors; tomography; dose characteristics; electron beams; filtered back projection algorithm; health care facilities; homogeneous scintillating fiber layer; iterative reconstruction algorithm; linear accelerator Varian Clinac DHX 2100; orthogonal plane; photon beam axis; radiotherapy; size 0.5 mm; therapeutic beam dosimetric study; tomographic reconstruction; voltage 6 MV; Arrays; Detectors; Image reconstruction; Ionization chambers; Noise; Photodiodes; Photonics; Dosimeters; dosimetry; radiation imaging; radiotherapy; scintillating fibers; scintillation detectors;
fLanguage :
English
Journal_Title :
Nuclear Science, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9499
Type :
jour
DOI :
10.1109/TNS.2012.2223231
Filename :
6375783
Link To Document :
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