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Biomedical subjects

A N Cherniĭ

Publications and source records attributed to A N Cherniĭ.

At least 19 recordsLinked to original sources
PubMed1991

[The status of and outlook for preventive fluorography in the RSFSR].

Fluorography is now the basic method for active detection of tuberculosis and other diseases of the thoracic organs and its detection amounts to 65% of active tuberculosis patients. There has been a tendency to decrease the number of individuals undergoing prophylactic fluorographic examination in the past 3-4 years, which is due to diverse reasons which can be united into 3 main groups. Recommendations are given on the differentiated rate of fluorographic examinations in relation to the incidence rates and socioeconomic conditions of a region. Factors are presented, which form the basis for forming population groups at a high risk for tuberculosis. Data are given on the development of a fluoromobile and a low-dose fluorograph of new design in the USSR, which provides high-grade fluorograms at a radiation load per patient 10 times less than the routine fluorographs.

Humans↗
PubMed1975

[Method for the functional evaluation of contrasted vessels of the lungs with the aid of stereoroentgenogrammetry and morphometry].

A complex method for measuring vessels of the lungs is suggested; the method includes a number of successive procedures: contrasting of vessels under physiological pressure, stereoscopy of the preparation of the lung in a non-atelectatic and non-fixed state and obtaining of stereopaired angiograms, marking the levels of branching of vessels and determination of their lumen by means of stereocomparator, fixation of the lung, spot cutting and morphometry of the wall of the same segments of the lung vessels. The size of the lumen of the vessel approximating the intravital one, was combined with morphometric parametres of its wall and indices were calculated characterizing a morpho-functional state of the blood flow bed of the lungs.

Angiography↗
PubMedDate not supplied

[Control of the main radiation parameters of a gamma teletherapy apparatus].

In radiotherapy a dosimetric method is used nowadays to control the magnitude of the radiation axis deviation from the isocenter (RL) of a gamma-beam therapeutic apparatus (gamma BTA). However, the use of the method requires special costly equipment. Besides, it is fairly laborious. The dosimetric method does not permit the measurement of the distance between the isocentre and the virtual source (DISvirt) A gamma-metric method of the RL and DISvirt control in the gamma BTA is described. It is based on the photogammametric treatment of a gamma-picture of a special test object. The method is marked by high accuracy and safety. In addition, the gamma BTA can also be used in operation of accelerating therapeutic units.

Cobalt Radioisotopes↗
PubMedDate not supplied

[Specialized equipment for stereophlebography].

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.

Humans↗
PubMedDate not supplied

[X-ray test objects with self-adjusting scales].

The paper concerns the measuring test objects fitted out with adjustable scales which are used during testoscopic stereoroentgenogrammetric exposure. The design and technique of using such outfits are under consideration.

Equipment Design↗
PubMedDate not supplied

[Fluorographic equipment for examining the populations of regions not easily accessible].

The article describes the design of the experimental prototypes of the lightened portable collapsible photoroentgenograph and mobile photoroentgenograph on the basis of the automobile with a higher cross country travel capacity, uAz-452-A, equipped with the chamber PK-110 (GDR). The test results showed that the above photoroentgenographs are convenient and effective for the prophylactic medical examination of the population in the not easily accessible regions.

Humans↗
PubMedDate not supplied

[A set of special devices made of polymer INPOLIN material for the treatment of cavernous tuberculosis].

The kit INPOLIN is intended for the local therapy of a tuberculosis cavern by spraying its walls with the powdery medicinal preparation. The kit includes a trochar for the cavern puncture, a device for the long-term fixation of the trochar tube in the cavern, a superchanging device with a spray and catheters. INPOLIN is intended for one course of treatment. The article describes the design of the instruments, their technical characteristics and the methods of using them.

Aerosols↗
PubMedDate not supplied

[Planning of computerized tomography using an X-ray stereogrammetry method].

X-ray stereogrammetry is used to derive the geometry of optimum body section. Principles and methodology of a trial-and-error technique for X-ray stereogrammetric survey are analysed. Calculations of the optimum slice for one of the clinical situations are presented along with experimental results obtained with a computed tomograph.

Adult↗
PubMedDate not supplied

[Device for aligning the optical center finder of an x-ray diagnostic apparatus].

The device of unique design (patent N 591691) incorporating a frame with a radiopaque wire spiral is described. With the device, the deviation of X-ray applicator's central beam can be detected from moire patterns on the X-ray film. By knowing the deviation from the centre required corrections for the direction of the central beam can be carried out by means of adjusting screws in the central mount. The device allows fast and highly accurate detection of the central beam deviation for the X-ray applicator. It features simple design, easy-of-use, and reliable operation.

Radiography↗