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Quality assurance of the dose delivered by small radiation segments

1998; IOP Publishing; Volume: 43; Issue: 9 Linguagem: Inglês

10.1088/0031-9155/43/9/017

1361-6560

V.N. Hansen, Philip Evans, G. Budgell, Judith Mott, Peter Williams, Marco J. P. Brugmans, F.W. Wittkämper, Ben J. Mijnheer, Kevin Brown,

Medical Imaging Techniques and Applications

The use of intensity modulation with multiple static fields has been suggested by many authors as a way to achieve highly conformal fields in radiotherapy. However, quality assurance of linear accelerators is generally done only for beam segments of 100 MU or higher, and by measuring beam profiles once the beam has stabilized. We propose a set of measurements to check the stability of dose delivery in small segments, and present measured data from three radiotherapy centres.