Dosimetric Study of Therapeutic Beams Using a Homogeneous Scintillating Fiber Layer

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 designe...

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Bibliographic Details
Published inIEEE transactions on nuclear science Vol. 60; no. 1; pp. 109 - 114
Main Authors Lamanna, E., Fiorillo, A. S., Gallo, A., Trapasso, A., Caroleo, R., Brancaccio, R., Barca, G., Carnevale, S., Castrovillari, F., Siaka, Y. F. T.
Format Journal Article
LanguageEnglish
Published IEEE 01.02.2013
Subjects
Arrays
Detectors
Dosimeters
dosimetry
Image reconstruction
Ionization chambers
Noise
Photodiodes
Photonics
radiation imaging
radiotherapy
scintillating fibers
scintillation detectors
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Summary: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.
ISSN:0018-9499
1558-1578
DOI:10.1109/TNS.2012.2223231