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Water bag bolus in external air cavities to produce dose homogeneity
International Journal of Radiation Oncology, Biology, Physics
|January 1, 1982
Abstract:
High energy photon beams traversing large iatrogenic air cavities can lead to surface underdosage and overdosage because of high exit dose. A water bag bolus in such external cavities is a remarkably simple and reproducible means of producing dosage homogeneity.