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Biomedical subjects

M I Zelikman

Publications and source records attributed to M I Zelikman.

17 recordsLinked to original sources
PubMedDate not supplied

[Information system of the diagnostic x-ray service of the Moscow Public Health Committee].

The paper shows how a radiation diagnostic information service system has been set up at the Moscow Public Health Committee. The structure of the service's database that has been introduced in the Research and Practical Center of Medical Radiology and become a core of the developed system is discussed in detail. The prospects for developing the system, which are also associated with the use of Internet capacities, are given.

Humans↗
PubMedDate not supplied

[Definition of quantum efficiency of X-ray detectors].

Different definitions available in the literature on the quantum efficiency of X-ray detectors are presented and compared. The relationship of this parameter to spatial frequencies for quantum accounting receivers and energy accumulating ones is analyzed. A procedure is proposed for evaluating the quantum efficiency of the detectors in the area of zero spatial frequencies, which is rather simple and requires no special testing equipment.

Fluoroscopy↗
PubMedDate not supplied

[Methods of automatic control of the characteristics of digital X-ray detectors].

Great emphasis is laid on automatic control of the most important parameters of X-ray image, such as contrast sensitivity and dynamic range, in the digital X-ray apparatuses that have recently found a wide clinical application in Russia and foreign countries. Methods and softwares are proposed for exercising this control.

Humans↗
PubMedDate not supplied

[Methods of assessing the parameter detail-contrast of X-ray converting receivers].

The paper analyzes methods for assessing the quality of an image in X-ray complexes (emphasis being laid on digital systems) by using the test object detail-contrast. Two possible variants of design of the test object are presented. Data of experimental assessment and comparison of the parameter detail-contrast for number of X-radiation converting receivers are given.

Evaluation Studies as Topic↗
PubMedDate not supplied

[Test object for controlling the quality of orthopantomography].

Great emphasis is placed on a FO-01 orthopantomographic phantom test for checking the position of the projection boundary of an isolated layer, its shape and thickness. The basic specific feature of the phantom test is that one can rather simply check the adjustment of orthopantomographs of different kinds (including digital ones) and make their comparative assessment by the projection of an isolated layer with certain resolution. Examples of projection nomograms of an isolated layer for different orthopantomographs, which are obtained by this test object are given.

Humans↗
PubMedDate not supplied

[Correlation of noises in the channels of digital X-ray receiver-transformer and the evaluation of registration's quant efficiency].

Theoretical and experimental research results related with the influence of correlation of signals in neighboring elements of digital X-ray receiver-transformer produced on the evaluation of the output ratio noise/signal and, as a consequence, on the evaluation of quantum registration efficiency are described in the paper.

Image Processing, Computer-Assisted↗
PubMedDate not supplied

[Choice of electron equipment for x-ray diagnostic digital scanning system].

The paper deals with the choice of electron equipment for X-ray diagnostic devices with digital image processing which are intended for population-based mass prophylactic examinations of lung. Guidelines for the optimization of the package of electron devices for processing and storing of data and for obtaining hard copies of X-ray films.

CD-ROM↗