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Volume 9, Number 2, 2004

MOSFET detectors as a tool for dose verification in photon beam

Marcin Dybek, Włodzimierz Łobodziec, Tomasz Iwanicki, Aneta Kawa–Iwanicka, Sebastian Markisch,

Summary:

Purpose: Application of MOSFET detectors in photon beam dose measurements in vivo in radiotherapy.
Materials and methods: Before measuring doses in vivo the following parameters such as: the dosimeter response to dose absorption, temperature, gantry angles and field side changes were determined using 6MV and 15MV photon beams. All measurements were made in a phantom to investigate the MOSFET accuracy, in electron equilibrium with a 0.6 cm3 Farmer ionization chamber.
Results: MOSFET parameters are presented in graphs. The conformity between the planned dose and the dose measured in vivo within ±5% was observed in 86% of patients treated with 6MV photon beams and 91% patients treated with 15MV, respectively (SD=3.5%).
Conclusions: MOSFET detectors are a useful tool for verifying the planned dose in external photon radiotherapy.

Signature: Rep Pract Oncol Radiother, 2004; 9(2) : 45-50

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Indexed in: EMBASE®, the Excerpta Medica database, the Elsevier BIOBASE (Current Awareness in Biological Sciences) and in the Index Copernicus.

http://www.sciencedirect.com/science/journal/15071367/19/2