title: [Radiobiological assessment of the effect of radiation therapy of tumors].
abstract: The concept of a nominal standard dose (NSD) and its further development--the concept of a cumulative radiation effect (CRE), the time-dose-fractionation factor (TDF), etc. are described. The main unit of a biological radiation effect in radiotherapy is CRE, the auxiliary one TDF. In treatment planning one should consider the tolerance not only of the skin and the connective tissue but also of all "critical" organs in the zone of irradiation. The value of an irradiated tissue volume is stressed. During interruption of therapy the results of NSD and CRE use are compared.
mesh_terms: D006801:Humans; D009369:Neoplasms / Q000532:radiotherapy*; D010347:Patient Care Planning; D011879:Radiotherapy Dosage; D012062:Relative Biological Effectiveness; D014894:Weights and Measures
vernacular_title: Radiobiologicheskaia otsenka éffekta luchevoĭ terapii opukholeĭ.