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Updated: Jun 1, 2026
Characterization of Recombination Effects in a Liquid Ionization Chamber Used for the Dosimetry of a Radiosurgical Accelerator
Published on: May 9, 2014
[Intensity modulated radiation therapy: analysis of patient specific quality control results, experience of
S Chiavassa1, G Brunet, S Gaudaire
1Service de physique médicale, centre René-Gauducheau, CLCC Nantes Atlantique, site hospitalier Nord, boulevard Jacques-Monod, 44805 Nantes Saint-Herblain cedex, France. s-chiavassa@nantes.fnclcc.fr
Purpose:
Systematic verifications of patient's specific intensity-modulated radiation treatments are usually performed with absolute and relative measurements. The results constitute a database which allows the identification of potential systematic errors.
Material And Methods:
We analyzed 1270 beams distributed in 232 treatment plans. Step-and-shoot intensity-modulated radiation treatments were performed with a Clinac (6 and 23 MV) and sliding window intensity-modulated radiation treatments with a Novalis (6 MV).
Results:
The distributions obtained do not show systematic error and all the control meet specified tolerances.
Conclusion:
These results allow us to reduce controls specific patients for treatments performed under identical conditions (location, optimization and segmentation parameters of treatment planning system, etc.).
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