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Matching of electron beams for conformal therapy of target volumes at moderate depths
Umeå University, Faculty of Medicine, Department of Radiation Sciences, Oncology.
Umeå University, Faculty of Medicine, Department of Radiation Sciences, Radiation Physics.
1996 (English)In: Radiotherapy and Oncology, ISSN 0167-8140, E-ISSN 1879-0887, Vol. 39, no 3, 261-270 p.Article in journal (Refereed) Published
Abstract [en]

The basic requirements for conformal electron therapy are an accelerator with a wide range of energies and field shapes. The beams should be well characterised in a full 3-D dose planning system which has been verified for the geometries of the current application. Differences in the basic design of treatment units have been shown to have a large influence on beam quality and dosimetry. Modern equipment can deliver electron beams of good quality with a high degree of accuracy. A race-track microtron with minimised electron scattering and a multi-leaf collimator (MLC) for electron collimating will facilitate the isocentric technique as a general treatment technique for electrons. This will improve the possibility of performing combined electron field techniques in order to conform the dose distribution with no or minimal use of a bolus. Furthermore, the isocentric technique will facilitate multiple field arrangements that decrease the problems with distortion of the dose distribution due to inhomogeneities, etc. These situations are demonstrated by clinical examples where isocentric, matched electron fields for treatment of the nose, thyroid and thoracic wall have been used.

Place, publisher, year, edition, pages
1996. Vol. 39, no 3, 261-270 p.
Keyword [en]
Radiotherapy; Electrons; Conformal therapy; Multi-leaf collimator; Isocentric electron treatment
URN: urn:nbn:se:umu:diva-39957DOI: 10.1016/0167-8140(96)01729-XISI: A1996UP29200008OAI: diva2:396922
Available from: 2011-02-11 Created: 2011-02-11 Last updated: 2011-02-18Bibliographically approved

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