SICH-9.1—a unique whole-body counting system for measuring Sr-90 via bremsstrahlung. The main results from a long-term investigation of the Techa River population

Kozheurov, V. P.

doi:10.1016/0048-9697(94)90072-8

Cited by 51 publications

(21 citation statements)

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“…The TRDS is basically a database processor, and its latest version has been the TRDS-2009. The dose-reconstruction process is based primarily on a large number of measurements of long-lived radionuclides in the human body using a unique whole-body counter (Kozheurov 1994), as well as on measurements of exposure rates performed in places where people lived. Uncertainties associated with the source-term data used for reconstruction of external exposure in the early period required special studies aimed at the validation of external dose estimates.…”

Section: Introductionmentioning

confidence: 99%

Analysis of EPR and FISH studies of radiation doses in persons who lived in the upper reaches of the Techa River

Дегтева

Shagina

Shishkina

et al. 2015

Radiat Environ Biophys

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Waterborne radioactive releases into the Techa River from the Mayak Production Association in Russia during 1949-1956 resulted in significant doses to about 30,000 persons who lived in downstream settlements. The residents were exposed to internal and external radiation. Two methods for reconstruction of the external dose are considered in this paper, electron paramagnetic resonance (EPR) measurements of teeth, and fluorescence in situ hybridization (FISH) measurements of chromosome translocations in circulating lymphocytes. The main issue in the application of the EPR and FISH methods for reconstruction of the external dose for the Techa Riverside residents was strontium radioisotopes incorporated in teeth and bones that act as a source of confounding local exposures. In order to estimate and subtract doses from incorporated (89,90)Sr, the EPR and FISH assays were supported by measurements of (90)Sr-body burdens and estimates of (90)Sr concentrations in dental tissues by the luminescence method. The resulting dose estimates derived from EPR to FISH measurements for residents of the upper Techa River were found to be consistent: The mean values vary from 510 to 550 mGy for the villages located close to the site of radioactive release to 130-160 mGy for the more distant villages. The upper bound of individual estimates for both methods is equal to 2.2-2.3 Gy. The EPR- and FISH-based dose estimates were compared with the doses calculated for the donors using the most recent Techa River Dosimetry System (TRDS). The TRDS external dose assessments are based on the data on contamination of the Techa River floodplain, simulation of air kerma above the contaminated soil, age-dependent lifestyles and individual residence histories. For correct comparison, TRDS-based doses were calculated from two sources: external exposure from the contaminated environment and internal exposure from (137)Cs incorporated in donors' soft tissues. It is shown here that the TRDS-based absorbed doses in tooth enamel and muscle are in agreement with EPR- and FISH-based estimates within uncertainty bounds. Basically, this agreement between the estimates has confirmed the validity of external doses calculated with the TRDS.

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Section: Introductionmentioning

confidence: 99%

Analysis of EPR and FISH studies of radiation doses in persons who lived in the upper reaches of the Techa River

Дегтева

Shagina

Shishkina

et al. 2015

Radiat Environ Biophys

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“…The basis of the past dose-reconstruction efforts for the Techa River Cohort has been summarized in several [1,2,3,4,5,6,7]. The absorbed doses due to external exposure were estimated on the basis of systematic measurements of gamma-exposure rates along the banks of the river and the typical life-style patterns of the inhabitants of the riverside villages.…”

Section: Characteristics Of the Dose Reconstruction Systemmentioning

confidence: 99%

Studies on the Techa river populations: dosimetry

et al. 2002

Radiat Environ Biophys

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“…These were originally based on poorly characterized source terms, limited environmental measurement data, and measurements of 90 Sr body-burdens derived initially from measurements of teeth and, since 1974, on whole body counter measurements [3] carried out on more than 14,000 cohort members. A continuing effort to improve and refine dose estimates for ETRC members was begun in the mid-1990s.…”

Section: Description Of the Cohortmentioning

confidence: 99%