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Stavitskii, R. V.; Guslistyi, V. P.; Lebedev, L. A.; Lebedenko, I. M.; Seliverstov, A. A.; Antropov, V. N.; Latypova, I. I.; Малаева, Н

doi:10.1023/a:1013795731478

Cited by 3 publications

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“…Therefore, each subject exposed to additional radiation should be subjected to individual dosimetric control. Perhaps, a hormesis effect reduces the influence of low doses of radiation on the subjects of the group tested [5]. The hormesis effect is manifested as an enhanced reaction of the human body to low doses of radiation.…”

Section: Hbs % Yearsmentioning

confidence: 99%

Dynamic monitoring of health of personnel of the radiology Department of Bryansk Regional oncological dispensary

et al. 2006

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The state of health of the personnel of the Radiology Department of the Bryansk Regional Oncological Dispensary before and after the Chernobyl nuclear acci dent was analyzed. The first type of radiation induced effects was monitored using individual dosimetric control (IDC) and by assessing the radiation situation around sources of ionizing radiation. The contribution of the Chernobyl nuclear accident to the total radiation induced effect is difficult to assess because it is unrealistic to evaluate the radionuclide uptake with food and water in the territory of nonactive contamination and at a cer tain distance from the territory. This situation was aggra vated by the fact that local agricultural food products from contaminated areas of the west Bryansk region were available on local food markets throughout the whole period after the accident.Methods of biological dosimetry provide a useful approach to evaluation of the extent of radiation exposure of people from the area neighboring a contaminated region. However, a large number of samples should be collected from the people from the contaminated region to obtain statistically significant results. This is due to rel atively low sensitivity of contemporary biological dosime try methods (minimum 20 100 mGy) [1].The goal of this work was to evaluate the state of health of the personnel of the Radiology Department of Bryansk Regional Oncological Dispensary before and after the Chernobyl nuclear accident using the AKS ENOFIT automatic system developed at the Moscow Institute of Engineering Physics. The operation of the system is based on analysis of peripheral blood count [3, 4] measured using an automatic blood analyzer and mathematical processing of the results obtained using the theory of image recognition and cluster analysis [2,3]. The subjects tested fell into two groups: apparently healthy subjects and ill patients. This division was based on 4 classes of human body state (HBS) [4]:− class 1: healthy subjects, 0 20%; − class 2: slight change in health state, 21 40%; − class 3: significant change in health state, 41 70%; − class 4: seriously ill patients, 71 100%. The methods of image recognition and cluster analy sis used in the analytical procedure are faultless [2]. The error of the image recognition method is determined by sampling error of the two classes of the blood count com parative analysis. The analysis of 60 staff members of the Radiology Department of the Bryansk Regional Oncological Dispensary during the period 1980 1996 revealed the character of the changes in the state of health of this group (Fig. 1). According to the IDC data, the level of exposure of the 60 subjects was lower than the limiting allowable level in group A (Е eff = 20 mSv/year). The mean effective annual dose was Е eff = 13.5 ± 5.1 mSv/year. All 60 subjects originally fell within the class of apparently healthy subjects (normal) (Fig. 1).

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Section: Hbs % Yearsmentioning

confidence: 99%

Dynamic monitoring of health of personnel of the radiology Department of Bryansk Regional oncological dispensary

et al. 2006

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“…However, according to these estimates the risk of stochastic aftereffects caused by exposure to ionizing radiation is presently significantly larger than estimated in previous years (Table 3) [25]. It is possible that the values of weighting factors and risks should be redetermined according to new findings on low-dose effects (most radiation doses received by patients during X-ray examinations can be regarded as low) [33,34]. In other words, the errors in determining these values can be as much as several hundred percent, which has a significant effect on the error of the effective dose [37].…”

Section: R V Stavitskii T V Zhanina a I Murashov And A S Kmentioning

confidence: 99%

Control of effective doses in X-ray examinations

et al. 1999

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“…The developed method is based on nonstatistical identification of images and cluster analysis [7,8]. The method provides analysis of the peripheral blood count (8 and…”

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“…The error of estimation of the coefficient K depends on the error of the effective dose measurement (+30%), error of calculation using the automatic classification system (_+5%), and individual sensitivity of patient's body to radiation [7,8] in the dose-effect curve can be explained [ 1 ] by homeostasis, i.e., ability of human body to keep its internal parameters constant despite changes in the environment. The regulatory mechanism of homeostasis is based on negative feedback, so that its response to the environmental factors is especially efficient in case of a single exposure to a strong environmental factor.…”

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Determination of dose load and dose-effect curves in patients undergoing X-ray examinations

Stavitskii¹,

Lebedev²,

Zhanina³

et al. 1999

Biomed Eng

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Exposure to ionizing radiation during diagnostic and prophylactic X-ray examinations most significantly contributes to the radiation toad on people. Annual radiation load on people in Russia related to the X-ray examinations is 90-150 mSv, which is 90-150% of natural radiation background. According to the concept adopted by the International Commission on Radiation Protection (ICRP) [2], above-background radiation of any type can cause stochastic aftereffects. This concept is based on the results of examination of large groups of people exposed to ionizing radiation (Hiroshima and Nagasaki atomic bombardment survivors, patients subjected to X-ray treatment of spondyloses and other nonmalignant diseases, etc.). The statement [3] that low radiation doses have positive stimulating effects on human health is based on limited data.It should be noted that modern experimental methods do not allow the effect of radiation doses lower than 50-100 mSv to be observed on the cellular or molecular level. The doses received during a single X-ray examination are considerably lower. Besides, they are nonuniformly distributed. This does not allow the actual dose-effect dependence to be determined. It is still unknown whether this dependence is linear, potential, or otherwise. This, in turn, leads to significant errors in the assessment of the low-dose effect.An attempt was made to solve the problem of determination of the dose-effect dependence for low doses received during a single exposure using an analytical method of processing of the peripheral blood count [4]. The developed method is based on nonstatistical identification of images and cluster analysis [7,8]. The method provides analysis of the peripheral blood count (8 and

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Dynamic monitoring of health of personnel of the radiology Department of Bryansk Regional oncological dispensary

Dynamic monitoring of health of personnel of the radiology Department of Bryansk Regional oncological dispensary

Control of effective doses in X-ray examinations

Determination of dose load and dose-effect curves in patients undergoing X-ray examinations

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