title: [Modelling the ecologic effect of accidents in gamma-treatment rooms].
abstract: The paper presents the procedure for evaluating the adverse radiation impact on the environment from the magnitude of the increased natural background while modelling emergencies on remote and intracavitary gamma-therapeutical apparatuses. It considers the accidents which result in full or partial failure of chamber protection with a full impaired source shield. The deleterious action of full chamber protection failure is displayed at about 12 km during accidents on remote gamma-apparatuses and at approximately 1,100 m during those on intracavitary equipment. In case of partially impaired chamber protection one should take into account the final dimensions of the source and the permeability of a chamber shield.
authors.forename: R B
authors.initials: RB
authors.lastname: Likhovetskaia
authors.forename: A I
authors.initials: AI
authors.lastname: Sevastíanov
authors.forename: L V
authors.initials: LV
authors.lastname: Vorobéva
mesh_terms: D004463:Ecology; D004869:Equipment Safety; D015902:Gamma Cameras; D005720:Gamma Rays / Q000009:adverse effects* / Q000627:therapeutic use; D006801:Humans; D016016:Proportional Hazards Models; D011829:Radiation Dosage; D018788:Radioactive Hazard Release