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1.
Med Tekh ; (1): 16-21, 2003.
Article in Russian | MEDLINE | ID: mdl-12608066

ABSTRACT

Radical improvements in the physiological features and self-sufficiency of hemodialysis equipment, an essential reduction of the volume of dialyzate contacting with patient's body and elimination of dependence of the equipment operation on the availability of a water-supply network can be ensured by applying a regime of circulation of a relatively small volume (3-5 l) of dialyzate through the regenerating device. The regeneration unit must eliminate the organic products of dialysis from the dialyzate and stabilize the ionic composition of the purified dialyzate according to the preset parameters. Modern methods and technical means for regenerating the used dialyzate are discussed; a regeneration unit, which ensures an electrochemical oxidation (in the used dialyzate) of nitrogen-containing organic metabolites with a subsequent sorption-type additional purification of electrochemically-processed dialyzate, is offered. The regeneration unit is made up of an electrolyser, a sorption-type additional-purification device and a gas utilizer; it eliminates organic metabolites, phosphorus, calcium and potassium from the used dialyzate and stabilizes the pH solution.


Subject(s)
Hemodialysis Solutions/chemistry , Renal Dialysis/instrumentation , Renal Dialysis/trends , Calcium/blood , Electrochemistry , Humans , Hydrogen-Ion Concentration , Kidney Failure, Chronic/blood , Kidney Failure, Chronic/metabolism , Kidney Failure, Chronic/therapy , Kidneys, Artificial , Oxidation-Reduction , Phosphorus/blood , Potassium/blood , Russia
2.
Med Tekh ; (1): 27-34, 2003.
Article in Russian | MEDLINE | ID: mdl-12608069

ABSTRACT

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.


Subject(s)
Nuclear Medicine/instrumentation , Academies and Institutes , Equipment Design , Humans , Image Processing, Computer-Assisted/instrumentation , Radiobiology/instrumentation , Radioimmunodetection/instrumentation , Russia , Scintillation Counting/instrumentation , Tomography, Emission-Computed/instrumentation
3.
Med Tekh ; (2): 36-8, 1999.
Article in Russian | MEDLINE | ID: mdl-10335509

ABSTRACT

The paper provides evidence for that the development of new treatments of tuberculosis by using up-to-date technical means and their introduction into practice. It gives the data of the researches and developments made by the VNIIMP-VITA close joint stock company, which are both aimed at providing tuberculous units and hospitals with necessary therapeutical equipment, such as devices for pneumothorax, endoscopic studies, etc.


Subject(s)
Equipment and Supplies, Hospital , Tuberculosis/therapy , Hospital Departments , Humans , Research
4.
Med Tekh ; (1): 3-5, 1999.
Article in Russian | MEDLINE | ID: mdl-10198886

ABSTRACT

Extrahospital monitoring of the body's status is an effective method for health promotion of man and the general population. The paper presents medical engineering rationale for the software of health monitoring under different conditions, identifies three base-line configurations of these complexes: for use in health institutions: for that in the institutions lacking permanent medical staff; for individual and familial use.


Subject(s)
Biomedical Engineering , Monitoring, Physiologic/instrumentation , Adolescent , Adult , Child , Health Promotion , Humans , Software
5.
Med Tekh ; (1): 40-6, 1996.
Article in Russian | MEDLINE | ID: mdl-8868395

ABSTRACT

The main clinical and diagnostic tasks while studying cerebrovascular diseases have been defined and set on the basis of analysis of the biophysical and pathophysiological factors and parameters that characterize the cerebral circulation in health and disease. The currently available physioengineering methods and means for evaluating cebral hemodynamics. Proposals to design new equipment and to improve the existing one and recommendations how to use them while examining the cerebral circulation in various clinical situations are given.


Subject(s)
Cerebrovascular Circulation , Biophysical Phenomena , Biophysics , Cerebrovascular Disorders/diagnosis , Cerebrovascular Disorders/physiopathology , Hemodynamics , Humans , Methods
9.
Med Tekh ; (2): 12-4, 1992.
Article in Russian | MEDLINE | ID: mdl-1513231

ABSTRACT

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.


Subject(s)
Absorptiometry, Photon , Bone Density , Humans , Models, Biological , Radiation
12.
Med Tekh ; (3): 17-22, 1977.
Article in Russian | MEDLINE | ID: mdl-886946

ABSTRACT

The key characteristics of a scintillation gamma-chamber that determine the quality of the obtained radiodiagnostic information are power and spatial resolution and the field of vision diameter. An analysis of these characteristics allowed it to outline the ways for their further improvement, which, within the bounds of the scintillation method of detection, can be achieved through employment of image intensifiers with a system of photomultipliers at the output screen.


Subject(s)
Scintillation Counting , Gamma Rays , Mathematics , Radionuclide Imaging/instrumentation
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