The reliability for radiotherapy applications of a normoxic-polymer gel dosimeter, analysed by means of optical methods, was studied. The optical transmittance was measured with a spectrophotometer and imaged with a CCD camera. The characteristics of sensitivity, spatial resolution, image stability, linearity of the response and reproducibility were investigated and analysed. Radiation induces a radical polymerisation in the gel matrix and the resulting macromolecules remain fixed in space making therefore possible the absorbed dose imaging.
Preliminary results from a polymer gel dosimeter for absorbed dose imaging in radiotherapy / M. Mariani, E. Vanossi, G. Gambarini, M. Carrara, M. Valente. - In: RADIATION PHYSICS AND CHEMISTRY. - ISSN 0969-806X. - 76:8-9(2007), pp. 1507-1510.
Preliminary results from a polymer gel dosimeter for absorbed dose imaging in radiotherapy
G. Gambarini;M. Carrara;M. Valente
2007
Abstract
The reliability for radiotherapy applications of a normoxic-polymer gel dosimeter, analysed by means of optical methods, was studied. The optical transmittance was measured with a spectrophotometer and imaged with a CCD camera. The characteristics of sensitivity, spatial resolution, image stability, linearity of the response and reproducibility were investigated and analysed. Radiation induces a radical polymerisation in the gel matrix and the resulting macromolecules remain fixed in space making therefore possible the absorbed dose imaging.
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