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- W2058249153 abstract "The clinical role of fast neutron therapy has been limited by excessive late normal tissue damage. A pilot study of accelerated fractionation of fast neutron therapy was performed, based on the rationale that this should result in an increase in the response in acute reacting tissues (normal and malignant), with no change in late damage and a consequent increase in the therapeutic ratio. Further accelerated fractionation should improve the local control of rapidly proliferating tumour, without the potential problem of inadequate reoxygenation inherent in accelerated photon schedules. 6 or 12 fractions of 62 MeV (p-Be) neutrons were given over 12 days to 27 sites in 23 patients with locally advanced tumours. With a dose reduction of 12% (18 Gy), acceptable skin and oral mucosa early reactions were obtained. A larger dose reduction (15%) was required at pelvic sites. The incidence of late EORTC/RTOG grade 4 toxicity was 46%. The overall response rate was 76% with a complete response rate of 16%. For locally advanced breast cancer, the complete response rate was 9%, which compares unfavourably with previous results with conventional neutron fractionation schedules. The combination of a low overall complete response rate and excessive late normal tissue toxicity suggests that accelerated fractionation of fast neutrons does not lead to an improvement in the therapeutic ratio, and that late normal tissue damage will continue to be dose limiting." @default.
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- W2058249153 date "1992-08-01" @default.
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- W2058249153 title "Accelerated fast neutron therapy: a pilot study" @default.
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- W2058249153 doi "https://doi.org/10.1259/0007-1285-65-776-691" @default.
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