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Orientador(es)
Resumo(s)
Since last decade, the debate on the parameter which reflects prostate cancer sensitivity to fractionation in a radiotherapy treatment, the α/β, has become extensive. Unlike most tumors, the low labeling indices (LI) and large potential doubling time that characterize the prostate tumor led some authors to consider that it may behave as a late responding tissue. So far, the existing studies with regard to this subject point to a low value of α/β, around 2.7 Gy, which may be considered as a therapeutic gain in relation to surrounding normal tissues by using fewer and larger fractions. The aim of this paper is to review several estimates that have been made in the last few years regarding the prostate cancer α/β both from clinical and experimental data, as well as the set of factors that have potentially influenced these evaluations.
Descrição
Palavras-chave
Oncology Cancer Radiotherapy Sensitivity Tumours Prostate cancer Radiobiology Alpha/beta ratio Dose fractionation
Contexto Educativo
Citação
Oliveira SM, Teixeira N, Fernandes L. What do we know about the α/β for prostate cancer? Med Phys. 2012;39(6):3189-201.