EVALUATION OF THE DOSIMETRIC PARAMETERS FOR 252CF DURING INTERSTITIAL BRACHYTHERAPY OF HEAD AND NECK ORGANS

Dosimetric calculations of the main parameters of interstitial brachytherapy of the head and neck organs with the 252Cf source were performed. 10 cases of low-power brachytherapy were analyzed. The concept of precision modeling of the interstitial brachytherapy scenario is formulated

THE RAT’S GASTROINTESTINAL TRACT DOSE DUE TO INNER IRRADIATION BY “HOT” PARTICLES

The main regularities analysis of the “hot” radioactive particles transfer in the digestive tract of laboratory animals (rats), which serve as reference organisms in the tasks of evaluation the radiation risk of environmental contamination with radionuclides for biota and humans, is presented.The reported study was funded by RFBR, project number 19-316-90014

CALCULATION AND ANALYSIS OF GAMMA RAY DOSES IN BRACHYTHERAPY OF A HEAD AND NECK ORGANS WITH A 252Cf SOURCE

Dosimetric calculations of a main parameters of interstitial brachytherapy of the head and neck or-gans with the 252Cf source were performed. 10 cases of low-power brachytherapy were analyzed. A concept of precision modeling of the interstitial brachytherapy scenario is formulated

THE THYROID «ACTIVITY-DOSE RATE» CONVERSION FACTORS FOR RADIOIODINES IN CATTLE IRRADIATION

The conversion factors (to converse cattle thyroid activity to thyroid dose rate) for radio-iodines 131-I, 132-I, 133-I, 135-I, which determine dose at early phase of radiation accidents are calculated. The calculations were made using a precise thyroid model and the MCNP radiation transport code

MORPHOLOGICAL AND HISTOCHEMIKAL CHANGES OF LIVER IN ACETATE STOMACH ULCER AND CHRONIK INFLUENCE OF HEXACHLORCYCLOHEXAN PESTICIDE

On the background of long peroral administration of HChCH at the dose of 10 maximum permissible concentrations (MPC) in animals with an acetate ulcer its penetrations into liver increases (10-20%) with the simultaneous rise of defensive-adaptive metabolic processes in it. With an increase of the dose of the administrated pesticide up to 50-100 MPC the aggressive course of ulcer with an increase of the frequency of its penetration into liver (up to 100% in the dose of 100 MPC) and op-pression of the activity of all the dehydrogenases, MAO, strengthening of glycogenolysis, the drop of RNA synthesis in hepa-tocytes are noticed. Simultaneously, the raised activity of acid phosphatase, alkaline phosphatase is saved that testifies to activization of hydrolytic and fibroblastic processes of the defensive nature

MORPHOLOGICAL AND HISTOCHEMIKAL CHANGES OF LIVER IN ACETATE STOMACH ULCER AND CHRONIK INFLUENCE OF HEXACHLORCYCLOHEXAN PESTICIDE

On the background of long peroral administration of HChCH at the dose of 10 maximum permissible concentrations (MPC) in animals with an acetate ulcer its penetrations into liver increases (10-20%) with the simultaneous rise of defensive-adaptive metabolic processes in it. With an increase of the dose of the administrated pesticide up to 50-100 MPC the aggressive course of ulcer with an increase of the frequency of its penetration into liver (up to 100% in the dose of 100 MPC) and op-pression of the activity of all the dehydrogenases, MAO, strengthening of glycogenolysis, the drop of RNA synthesis in hepa-tocytes are noticed. Simultaneously, the raised activity of acid phosphatase, alkaline phosphatase is saved that testifies to activization of hydrolytic and fibroblastic processes of the defensive nature