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A variable speed translating couch technique for total body irradiation.

M Chrétien·C Côté·R Blais·L Brouard·L Roy-Lacroix·M Larochelle·R Roy·J Pouliot
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Abstract

We have developed a variable speed translating patient couch system for the delivery of total body irradiation (TBI). For a whole body Rando-type phantom, dose variation at mid-plane relative to the prescription point (navel) can be as high as 15% (neck or legs) with a constant velocity. By taking into account variations in body thickness, the intensity modulation radiation therapy, resulting from variable velocities, effectively delivers a uniform dose distribution at mid plane. The couch control user interface, technical aspects and dose planning optimization procedure for determining velocity distribution are described.

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Biophysical PhenomenaBiophysicsHumansMotionNeoplasmsPhantoms, ImagingRadiotherapy Planning, Computer-AssistedTomography, X-Ray ComputedWhole-Body IrradiationJournal ArticleResearch Support, Non-U.S. Gov't

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BibTeXRIS

M Chrétien, C Côté, R Blais, L Brouard, L Roy-Lacroix, M Larochelle, R Roy, J Pouliot. 2000. A variable speed translating couch technique for total body irradiation.. https://doi.org/10.1118/1.598978

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