Metrological Parameters of the Unified Calibration Whole-Body Phantom with Gamma-Emitting Radionuclides

Kovtun, A.N.; Firsanov, V.B.; Fominykh, V.I.; Isaak'yan, G.A.

doi:10.1093/oxfordjournals.rpd.a033071

Cited by 37 publications

(12 citation statements)

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“…In both vehicle types, each exam chair allows simultaneous detection of the thyroid and whole-body content of radionuclides with lead-shielded NaI(Tl) scintillators. The thyroid detector is calibrated with a thyroid phantom (ICRU, 1992) and the whole-body detector with an anthropomorphic phantom (Kovtun et al, 2000). During in vivo monitoring spectra are displayed and the Region of Interest (RI) can be selected to record the number of counts in the photoelectric peak of the monitored radionuclides.…”

Section: Mobile Units and Detectorsmentioning

confidence: 99%

An experimental study of detection limits and corresponding doses of IRSNin vivomonitoring vehicles in the case of post-accident scenarios

et al. 2014

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-The measurement performances of in vivo monitoring vehicles were studied considering an increase in the radiological background in areas where the population is not evacuated after a nuclear accident. The study focused on 137 Cs and 131 I Detection Limits (DLs) and corresponding doses, for adults and one-year-old children. These DLs for ground contamination were obtained experimentally using a grid of point sources. Then, the DLs and doses were calculated using the experimental data and a safety factor for two accident scenarios. For these scenarios the 137 Cs DL corresponds to a committed effective dose of 0.02 mSv. The 131 I DL corresponds to committed equivalent thyroid doses of 3 mSv (adult) and 30 mSv (one-year-old child). To guarantee a 45 mSv thyroid equivalent dose assessment for the child the surface activity of 131 I + 132 I + 133 I should be below 1.6 MBq/m 2 . This study shows that the vehicles can operate in a contaminated area where the population is not evacuated. However, in such a case, the contamination level outside and inside the vehicle should be kept stable to guarantee efficient body counting.

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Section: Mobile Units and Detectorsmentioning

confidence: 99%

An experimental study of detection limits and corresponding doses of IRSNin vivomonitoring vehicles in the case of post-accident scenarios

et al. 2014

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“…It was developed at the Research Institute for Industrial and Marine Medicine and the Research and Technical Centre Protection, St Petersburg (4) . The IGOR phantom consists of polyethylene blocks (density, 0.95 g cm…”

Section: Igor Phantommentioning

confidence: 99%

“…Number of blocks equipped with radioactive rods during the measurements in phantom configurations P1 to P6 with the five radionuclides used (43) . (4,43) .…”

Section: Experimental Data Vs Mc-computed Monoenergetic Responsementioning

confidence: 99%

“…The calibration may be performed by measuring physical phantoms, such as the RANDO phantom developed by Alderson et al (1) , the LLNL phantom developed at the Lawrence Livermore National Laboratory (2) , the BOttle Manikin ABsorber (BOMAB) phantom, defined by the American National Standards Institute (3) , the IGOR phantom developed at St Petersburg (4) , the Bottle-shaped phantom developed at the University Hospital of Cologne (5) or the Block-shaped phantom developed at the Japan Atomic Energy Research Institute (6) . The calibration may also be undertaken by computation (virtual calibration) using either mathematical models simulating physical phantoms or virtual computational models such as the first stylised phantoms developed at the Oak Ridge National Laboratory based on recommendations of the Medical Internal Radiation Dose Committee (7,8) and the ADAM and EVA phantoms developed at Helmholtz Zentrum München (9) .…”

Section: Introductionmentioning

confidence: 99%

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Monte Carlo simulation of a whole-body counter using IGOR phantoms

Bochud

Laedermann

Baechler

et al. 2013

Radiation Protection Dosimetry

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Whole-body counting is a technique of choice for assessing the intake of gamma-emitting radionuclides. An appropriate calibration is necessary, which is done either by experimental measurement or by Monte Carlo (MC) calculation. The aim of this work was to validate a MC model for calibrating whole-body counters (WBCs) by comparing the results of computations with measurements performed on an anthropomorphic phantom and to investigate the effect of a change in phantom's position on the WBC counting sensitivity. GEANT MC code was used for the calculations, and an IGOR phantom loaded with several types of radionuclides was used for the experimental measurements. The results show a reasonable agreement between measurements and MC computation. A 1-cm error in phantom positioning changes the activity estimation by >2 %. Considering that a 5-cm deviation of the positioning of the phantom may occur in a realistic counting scenario, this implies that the uncertainty of the activity measured by a WBC is ∼10-20 %.

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“…Ces dernières mesures permettent une estimation rapide et fiable de l'étendue, la nature, l'activité et la distribution des radionucléides incorporés afin d'optimiser le traitement de décontamination. Dans le cas des mesures in vivo, il s'agit d'optimiser l'étalonnage des systèmes de comptage qui, dans la pratique, se fait à l'aide de fantômes physiques tels que le fantôme IGOR pour les étalonnages en géométrie corps entier (Kovtun et al, 2000) ou le fantôme du Livermore pour les étalonnages pulmonaires (Griffith et al, 1978 ;Newton et al, 1985). En effet, ces mannequins sont d'un réalisme anatomique limité.…”

Section: Introductionunclassified

Nouvelle méthode de surveillance des travailleuses du nucléaire par anthroporadiamétrie : utilisation des calculs Monte Carlo associés aux fantômes déformables de type Mesh et NURBS

2011

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Metrological Parameters of the Unified Calibration Whole-Body Phantom with Gamma-Emitting Radionuclides

Cited by 37 publications

References 0 publications

An experimental study of detection limits and corresponding doses of IRSNin vivomonitoring vehicles in the case of post-accident scenarios

An experimental study of detection limits and corresponding doses of IRSNin vivomonitoring vehicles in the case of post-accident scenarios

Monte Carlo simulation of a whole-body counter using IGOR phantoms

Nouvelle méthode de surveillance des travailleuses du nucléaire par anthroporadiamétrie : utilisation des calculs Monte Carlo associés aux fantômes déformables de type Mesh et NURBS

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