[A realistic approach to the modelling of nonuniform whole-body radiation exposures in a radiobiology experiment].

The equidosimetric principle for modelling of general nonuniform radiation effects has been formulated. The method for realistic modelling of the effects by dynamic control of radiation exposure of two basic critical systems (active bone marrow and intestine) has been developed.

[Dosimetric planning of partial radiation exposure in radiobiological experiments].

The authors describe a new method of dosimetric design of partial radiation exposures (PRE) in radiobiological experiments on rodents, using a universal lead component screen. A choice of a shape of irradiation fields and location of screen elements on the body of an animal is done according to a CT program, developed in the IBM PC version. This method helps to standardize physicotechnical support of PRE in radiobiological experiments.

[Phantom research in the individual dosimetric planning of the intracavity irradiation of uterine cancer patients].

The paper is concerned with the results of dose measurements on a uterine phantom under the conditions close to those of the practice of radiotherapy of endometrial cancer patients using the AGAT-B unit. Comparison of experimental and rated dose values made it possible to find points of particular clinical alertness as well as a point of the control of accuracy of dose formation during a radiotherapeutic session.

[Individualization of the dosimetric requirements of intracavitary irradiation in the radiotherapy of gynecologic patients].

The authors proposed a method of dosimetric planning in intracavitary irradiation taking into account the individual features of a patient, including the status of the uterus during the introduction of radiation sources into its cavity. To simulate the dynamics of a resultant uterus shift a special device was developed to obtain information required for individual planning. The proposed method is aimed at the prevention of undesirable radiation reactions and complications in healthy organs.

Calculation of the estimated collective effective dose equivalent (SE) due to x-ray diagnostic examinations--estimate of the SE in Finland.

The collective effective dose equivalent caused by diagnostic x-ray examinations in Finland has been estimated. The influence of how the remaining organs are selected, as specified by the International Commission on Radiological Protection (ICRP), on the effective dose equivalent, HE, has been studied. The doses to 23 different organs, including the six primary organs and 17 relevant remaining organs, were calculated.