Strahlentherapie und Onkologie : Organ der Deutschen Röntgengesellschaft ... [et al]
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In radiotherapy to ensure that appropriate tumor lethal dose is delivered without exceeding normal tissue tolerance, concepts like NSD and its derivatives were used in the past. Due to their short coming these concepts are now replaced by a linear quadratic model. ⋯ For most of the tumors and normal tissues, values of the parameters are not yet accurately known. We have estimated alpha/beta value for mucosal reactions, i.e. normal tissue early reactions in head neck cases treated with twice daily fractionation schedules and observed it to be 7.90 Gy for slight mucositis whereas it is 7.68 and 8.11 Gy for patchy and confluent mucositis, respectively.