[X-ray intensifying screens]. / Usilivaiushchie rentgenovskie ékrany.

The paper provides the technical parameters and data of intensifying X-ray screens made in Russia. They cover both energy properties (sensitivity, spectral characteristics) and the quality of an image (frequency-contrast characteristics, granulation). It is shown in what cases this or that class of screens is preferable to be used.

[Specialized equipment for stereophlebography]. / Spetsial'naia apparatura dlia stereoflebografii.

The authors describe a complex of equipment for radiodiagnosis of varicose veins of the lower limbs and for planning vascular operations. The complex is fitted out with an automatic stereocasette made in the form of an attachment to a standard radiodiagnostic system and a stereoscope for visual analysis of the stereophlebograms. The design and applications of the equipment are reviewed.

[The ASORI stereoroentgenogrammetric system]. / Stereorentgenogrammetricheskii kompleks ASORI.

The ASORI stereoroentgenometric complex includes a stereoroentgenographic unit, a kit of testometric devices and a measuring stereoscope. The above unit is designed on the basis of the PYM-20 roentgenodiagnostic apparatus and provides for automatic photography. The testometric devices have inclined contrast scales and are photographed. The stereo pairs are analysed on the measuring stereoscope. The structural elements of the investigated object are measured by the unit optical marker in relation to the testometric device image. The testometric method provides for operative and accurate measuring the anatomic structures in health and disease.

[Frequency-contrast characteristics of an x-ray image intensifier]. / Chastotno-kontrastnaia kharakteristika usilitelia rentgenovskogo izobrazheniia.

To analyze intricate roentgeno-diagnostic complexes the need for application of frequency-contrast characteristics (FCC) is generally acknowledged at present. The paper presents a description of procedures used in an experimental definition and analysis of three-dimensional characteristics of roentgen image amplifiers constructed with a roentgen electron-optic converter serving as a base. As a result of an experiment the FCC of individual components of the amplifier have been determined, critical links in the device educed and the summary FCC of all its channels calculated. Possible ways of improving the parameters of the Soviet-made units are indicated.