[Nuclear-medical equipment in the Research Institute for Medical Instrument-making]. / Iaderno-meditsinskaia apparatura v NII Meditsinskogo priborostroeniia.

The activity of the department for emission introscopy of the Research Institute for Medical Instrument-Making ("ZAO VNIIMP-VITA") is described in the article. A list of developed and commissioned devices and instruments for the field of nuclear medicine is presented. Methods of elaboration of some sophisticated instruments and units designed for radio-biochemical and radio-immunologic examinations as well as methods of elaboration of scintillation gamma cameras, tomograph GKS-301T, medical dosimeters and of other devices are also described.

[Current methods and equipment in densitometry of the bone tissue]. / Sovremennye metody i apparatura dlia densitometrii kostnoi tkani.

In the past 15 years there has been an intensive development of methods and equipment for non-invasive quantitative determination of the mineral status of the human skeleton in the USA and some Western European countries. The specialized osseous densitometers which are based on photon absorptiometry and which use various radionuclides or an X-ray tube as a source of radiation have extensively spread.

[Radionuclide methods of measuring mineral contents in the bone tissue]. / Radionuklidnye metody izmereniia soderzhaniia mineralov v kostnoi tkani.

Over the recent 10-15 years, osseous densitometers intended for measuring the content of minerals in osseous tissue have become very popular abroad. To record statistically significant changes in an osseous mineral, these devices should have reproducibility (variation rate) exceeding 2%. Mono- and biphoton densitometers may be distinguished by the type of the applied radionuclide. Biphoton densitometers are advantageous since they permit examining any part of the skeletal system of the patient or the whole body. Biphoton absorptiometry is based on measuring the transition of photons of two energies via the medium that largely consists of the two materials bone and soft tissue. The authors describe the results of examining parts of the peripheral skeleton with the aid a laboratory sample of a biphoton osseous densitometer for the peripheral skeleton.

[Radionuclide sensitivity of a plastic scintillator]. / Issledovanie chuvstvitel'nosti plastmassovogo stsintilliatora k radionuklidam.

To determine experimentally the radionuclide sensitivity of the scintillation detector is not always possible. The reasons for the selection of the methodology of computing relative radionuclide sensitivity for a through-well scintillator is the purpose of the study. The design data are supported by the experimental results using standard radioactive solutions, the correlation between the design and experimental data being within the error +/- 5%.