Characterization of Fricke-gel layers for absolute dose measurements in radiotherapy
- Dept. of Physics, 'Universita degli Studi' of Milan, via Celoria 16, I-20133 Milano (Italy)
- Medical Physics Unit, Fondazione IRCCS Istituto Nazionale Tumori, Via Venezian 1, I-20133 Milano (Italy)
- INFN Istituto Nazionale di Fisica Nucleare Section Milan, via Celoria 16, I-20133 Milano (Italy)
Fricke-gel layer dosimeters (FGLDs) have shown promising features for attaining absolute measurements of the spatial distribution of the absorbed dose in radiotherapy. Good precision of results (within 3%) is achieved by means of calibration of each single dosimeter before measurement. The calibration is performed irradiating the dosimeter at a uniform and precisely known dose, in order to get a calibration matrix that must be used, with pixel-to-pixel manipulation, to obtain the dose image. A study of the trend in time of dosimeter response after one or more exposures was carried out and calibration protocols were suitably established and verified. (authors)
- OSTI ID:
- 22039820
- Resource Relation:
- Conference: ANIMMA 2011: 2. International Conference on Advancements in Nuclear Instrumentation, Measurement Methods and their Applications, Ghent (Belgium), 6-9 Jun 2011; Other Information: Country of input: France; 5 refs.; IEEE Catalog Number: CFP1124I-CDR
- Country of Publication:
- United States
- Language:
- English
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