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The Medical Radiology and Radiation Safety journal ISSN 1024-6177 was founded in January 1956 (before December 30, 1993 it was entitled Medical Radiology, ISSN 0025-8334). In 2018, the journal received Online ISSN: 2618-9615 and was registered as an electronic online publication in Roskomnadzor on March 29, 2018. It publishes original research articles which cover questions of radiobiology, radiation medicine, radiation safety, radiation therapy, nuclear medicine and scientific reviews. In general the journal has more than 30 headings and it is of interest for specialists working in thefields of medicine¸ radiation biology, epidemiology, medical physics and technology. Since July 01, 2008 the journal has been published by State Research Center - Burnasyan Federal Medical Biophysical Center of Federal Medical Biological Agency. The founder from 1956 to the present time is the Ministry of Health of the Russian Federation, and from 2008 to the present time is the Federal Medical Biological Agency.
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Medical Radiology and Radiation Safety. 2019. Vol. 64. No. 3. P. 40–45
DOI: 10.12737/article_5cf232752e83d4.66034976
F.S. Torubarov, M.V. Kuleshovа, S.N. Lukyanova, Z.F. Zvereva, A.S. Samoylov
Spectral Correlation Analysis of EEG of Liquidators of the Chernobyl Accident with Neurological Disorders
A.I. Burnasyan Federal Medical Biophysical Center, Moscow, Russia. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
F.S. Torubarov – Head of Lab., Dr. Sci. Med., Prof.;
M.V. Kuleshova – Doctor-Neurologist, PhD. Med.;
S.N. Lukyanova – Chef Researcher, Dr. Sci. Biol., Prof.;
Z.F. Zvereva – Senior Researcher, Dr. Sci. Med.;
A.S. Samoylov – Director General, Dr. Sci. Med., Prof. RAS;
Abstract
Purpose: Comparative analysis of spectral correlation characteristics of EEG from liquidators of the Chernobyl accident and persons group, with neurological disorders.
Material and methods: A study carried out with the participation of 141 of the liquidator of the Chernobyl accident and 84 people group. Ionizing effects could be subject only to the liquidators. The average radiation dose in a group of liquidators was 110 ± 14 mSv. Groups were matched on age and employment. All persons have passed clinical neurological and electrophysiological examination. The focus of the article given that spectral and correlation analysis of EEG.
Results: Clinical examination made it possible to diagnose neurological disorders in both groups as: vegetovascular dystonia, neurocirculatory dystonia, dyscirculatory encephalopathy of different etiology. Their number and extent dominated statistically in a group of liquidators of the Chernobyl accident. It is important to note that increasing the frequency of their manifestations depending on the liquidators received radiation doses have not been identified. However, the disorder is diagnosed more often in the psychoemotional sphere among liquidators, than in the group mapping (61.7 % and 29.7 %, respectively). The analysis reveals statistically significant differences in EEG spectra in the presence of specified diagnoses compared with known characteristic of norms. Spectral and correlation analysis of EEG complements these data, demonstrating the existence of correlative considered diagnoses and significant differences between groups of liquidators and mappings. Liquidators increased delta-range observed in the authentically greater degree (as compared to a matched group) and combined with a significant reduction in the alpha-frequency index. The observed changes among liquidators are functional and non-specific in nature. Picture of the totality of the observed changes is not specific. It is regarded as one of the non-pathogenic mechanisms of development of the asthenic symptoms of different etiology.
Conclusions: In the group of liquidators revealed a significant increase in the quantity and the degree of neurological disorders. In the spectrum of EEG liquidators reliably amplifies the index delta-activity and decreases the severity of alpha range compared to a mappings group. It is important that these changes are accompanied by a weakening of the correlations between brain structures and disruption EEG rest.
Key words: liquidators of the Chernobyl NPP accident, group comparison, clinical neurological examination, spectral and correlation analysis of EEG, significant differences
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For citation: Torubarov FS, Kuleshovа MV, Lukyanova SN, Zvereva ZF, Samoylov AS. Spectral Correlation Analysis of EEG-Liquidators of the Chernobyl accident with Neurological Disorders. Medical Radiology and Radiation Safety. 2019;64(3):40-5. (Russian).
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