[Physicotechnical and dosimetric support of human whole-body irradiation in a standard medical source of photon radiation].

The paper is concerned with physicotechnical and dosimetric support of technology of therapeutic whole-body irradiation on a serial gamma apparatus ROKUS, with which a majority of radiological institutions in the USSR are fit out. Technology consists of the following procedures: patient positioning with relation to a source with a horizontal axis of radiation. Correction of dose distribution by means of a three-element compensator taking into account patient's constitutional peculiarities and preradiation preparation data; double irradiation in the bilateral regimen in the supine position.

[The use of an improved method of comparative dispersion of birefringence for research on dental enamel mineralization].

A number of modifications were made in the double refraction comparative dispersion techniques, permitting a quantitative analysis of apatites. These modifications are related to some features of monochromator employment, to the method of the compensator graduation, and to the mathematical processing of the measurement results, and they have essentially simplified the original technique and made it more reliable. The study has revealed that applications of 3% remodent solution followed by coating the teeth with 3% remodent-containing cyanacrylate lacquer increase calcium content in the enamel by 1.

[Results and future of the activities of the Department of Medical Radiation Physics of the Central Scientific Research Roentgenoradiology Institute of the USSR Ministry of Public Health].

The main directions of research activities, pursued in the Department of Medical Radiation Physics over 25 years, are reviewed. The staff-members have done a lot for the development of Soviet modern radiotherapeutic engineering (electron accelerators). They are devising a cyclotron complex for purely medical purposes.

[Evaluation of the efficiency of the shaping of brehmstrahlung beams on electron accelerators].

Proceeding from analysis of the influence of parameters of the target-filter system on radiation-physical characteristics of braking radiation, some recommendations were issued for assessment of the efficacy of the forming systems of medical accelerators of electrons. A new criterion--a coefficient of the forming system efficacy--was introduced, characterizing a beam formation tract with relation to a whole set of radiotherapeutic problems.

[Dosimetric characteristics of the bremsstrahlung beam from the LUE-15M medical linear electron accelerator].

The paper presents methods and results of a study of radiation-physical characteristics of inhibitory radiation beam with the Grenz energy of 15MeV generated by an electron linear accelerator LUE-15M. Special emphasis is laid on primary dosimetric information used for the planning of radiotherapy: depth doses, beam profiles, dose functions of a collimated beam. It has been shown that in general the accelerator meets the requirements of the International Electrotechnical Commission.

[Dosimetric characteristics of encapsulated 125I sources for interstitial radiation therapy].

Thermoluminescent dosimetry in the Mix-D material was used to study the dosimetric characteristics of discrete sources in the form of titanium and nylon capsules, sizes 0.8 X 2.5 and 1.