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A variable speed translating couch technique for total body irradiation
Author(s) -
Chrétien Mario,
Côté Carl,
Blais Roger,
Brouard Lucie,
RoyLacroix Lise,
Larochelle Marie,
Roy René,
Pouliot Jean
Publication year - 2000
Publication title -
medical physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.473
H-Index - 180
eISSN - 2473-4209
pISSN - 0094-2405
DOI - 10.1118/1.598978
Subject(s) - total body irradiation , variable (mathematics) , nuclear medicine , medical imaging , irradiation , dosimetry , medical physics , computer science , physics , mathematics , medicine , artificial intelligence , nuclear physics , surgery , mathematical analysis , chemotherapy , cyclophosphamide
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.