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Background and purpose: Published data to estimate the dose outside the primary beam, i.e. the peripheral dose (PD), are only valid for perpendicularly incident beams. In radiotherapy of breast cancer patients often a tangential beam technique is used, for which the published PD data cannot be applied.Material and methods: Measurements were made in a water phantom for three sizes of a breast phantom,...
Background and purpose: Many papers have been published on the measurement for specific treatment machines and/or techniques of the dose to points outside the primary beam, often called the peripheral dose (PD). Most papers concern measurements in phantoms. We report on the results of a comparison of estimates of the PD, based on these phantom measurements, with PDs measured on patients.Material...
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