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Biomedical subjects

A Iu Demidov

Publications and source records attributed to A Iu Demidov.

7 recordsLinked to original sources
PubMed1983

[Semiquantitative assessment of myocardial scintigrams using 201Tl].

A program for an automated semiquantitative evaluation of myocardial scintigrams with 201Tl was proposed. Altogether 11 healthy subjects and 34 patients with acute myocardial infarction were examined. The patients have shown a significant decrease (p less than 0.01) in 201Tl accumulation in some segments of the myocardium as compared to the indices of healthy subjects irrespective of myocardial infarction site. The threshold values of reduced indicator accumulation have been deduced for the front straight and front left oblique 45 degrees projections. The proposed program provides for a sufficient accuracy and a good reproducibility of results.

Diagnosis, Computer-Assisted↗
PubMed1983

[Diagnostic possibilities of myocardial scintigraphy using T1-201 in acute myocardial infarction].

Myocardial scintigraphic investigation using 201T1 was performed in 36 patients with suspected acute myocardial infarction and 11 clinically normal controls. The scintigrams were assessed visually and using a computer program for semiquantitative assessment of 201T1 distribution across the myocardium. The control subjects' scintigrams show a comparatively even myocardial distribution of the label. Patients with acute myocardial infarction were divided into 2 groups: those with large-focal (28) and small-focal (8) infarctions. All the patients from the large-focal group showed perfusion defects in their scintigrams. Clinical and autopsy diagnoses coincided in all the cases, and the vital scintigraphic pattern correlated with the posthumous localization of the myocardial infarction. However, the method of myocardial scintigraphy with 201T1 in acute myocardial infarction is of low specificity. To improve the differential diagnosis of myocardial infarction, repeated scintigraphy is needed.

Adult↗
PubMed1978

[Several functions of the visual analyzer in chronic alcoholic patients].

The authors examined 615 patients with chronic alcoholism. The study demonstrated an increased number of individuals with myopia, presbyopia, amblyopia, angiomas and angiosclerosis among them as compared to that of the general population. The frequency of optical nerve atrophies in the patients was not high (0.32%). In 205 cases the function of colour sensory and darkness adaptation was determined. The highest frequency of colour sensory was in the group of patients with the withdrawal syndrome. Eventually this function had a tendency towards restitution. The velocity of darkness adaptation was drastically changed in patients with chronic alcoholism but it was also reversible.

Adolescent↗