Consideration of the radiation dose delivered away from the treatment field to patients in radiotherapy.

J Med Phys · 2011 · PMC3119954 · PMID 21731221

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may be significantno p-value reported

For this reason, anecdotal evidence suggests that oncologists and other clinicians are often surprised that there may be significant differences in out-of-field dose, and that in this regard treatments on different machines may not be identical.

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Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.