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Proceedings Paper

Multileaf collimator for Coline medical accelerators
Author(s): Janusz Harasimowicz; Grzegorz Plebański; Krzysztof Sajna
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Paper Abstract

Multileaf collimator (MLC) allows advanced field shaping for radiation therapy delivered with medical accelerators. In this paper theoretical considerations and scientific studies of a new MLC design are described. Considered multileaf collimator model comprises of a multiplicity of tungsten leaves of 1 cm width projected at isocenter plane. To ensure compatibility of a new MLC solution with different accelerator types as well as to assure high reliability in irradiated environment and presence of strong magnetic field, a complex and independent control system had to be developed. It comprises of two modules - one placed in the accelerator treatment head and the other one placed in the control room. Both of them ensure high reliability and treatment quality while working in harsh conditions. Mechanical design and leaf shape optimization algorithm based on a ray tracing method are also described in details. Adapted solutions allowed providing minimized and uniform radiation penumbrae in the full range of leaves positions which is crucial for modern advanced radiotherapy.

Paper Details

Date Published: 28 December 2007
PDF: 12 pages
Proc. SPIE 6937, Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2007, 693727 (28 December 2007); doi: 10.1117/12.784726
Show Author Affiliations
Janusz Harasimowicz, Soltan Institute for Nuclear Studies (Poland)
Grzegorz Plebański, Soltan Institute for Nuclear Studies (Poland)
Krzysztof Sajna, Soltan Institute for Nuclear Studies (Poland)


Published in SPIE Proceedings Vol. 6937:
Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2007

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