Conversion coefficients from absorbed dose to tissue to the newly proposed ICRU/ICRP operational quantities for radiation protection for beta reference radiation qualities

Behrens, R.

doi:10.1088/1361-6498/abf94f

Cited by 3 publications

(2 citation statements)

References 13 publications

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“…Focusing on the operational quantities used by the monitoring instrumentation, the ICRU recently presented new definitions in the case of external radiation, improving the methodology for estimating the effective dose and promoting its gradual adoption [ 7 ]. The influence of these novelties must be investigated from the point of view of radiation emergency monitoring: the new operational quantities should allow for a more accurate estimation of the effective dose and dose to the extremities, but relevant differences remain for some photon and neutron fields [ 11 , 12 , 13 ].…”

Section: From Sievert To Graymentioning

confidence: 99%

Sievert or Gray: Dose Quantities and Protection Levels in Emergency Exposure

Ferrari

Manenti

Malizia

2023

Sensors

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Mitigation or even elimination of adverse effects caused by ionizing radiation is the main scope of the radiation protection discipline. The interaction of radiation with living matter is quantified and correlated with biological effects by dose. The Sievert is the most well-known quantity, and it is used with the equivalent and effective dose to minimize stochastic effects. However, Grey is the reference quantity for sizing tissue reactions that could occur under high-exposure conditions such as in a radiation emergency. The topics addressed in this review are the choice to move from Sievert to Grey, how the operational quantities for environmental and individual monitoring of the detectors should consider such a change of units, and why reference levels substitute dose levels in emergency exposure.

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Section: From Sievert To Graymentioning

confidence: 99%

Sievert or Gray: Dose Quantities and Protection Levels in Emergency Exposure

Ferrari

Manenti

Malizia

2023

Sensors

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“…However, as these quantities have not yet been internationally adopted in basic safety standards on radiation protection, by bodies such as the International Atomic Energy Agency and the European Commission, they were not adopted in the revised standard series ISO 6980. Anyway, for possible future use, corresponding conversion coefficients have already been determined [48] and are ready for a possible future revision of ISO 6980.…”

Section: Outlook: Quantities According To Icru 95mentioning

confidence: 99%

New beta primary standard (BPS2) and revised ISO 6980 at PTB

Behrens

2023

Metrologia

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Firstly, in this work, the main characteristics of PTB’s new beta primary standard (BPS2) are presented in comparison to its previous one (BPS1), i.e., to the Böhm chamber. Secondly, the main changes of the revised ISO standard series on beta reference radiation fields, ISO 6980, are described. Finally, the application of the revised ISO 6980 to both PTB’s new and old beta primary standard is implemented. It turned out that both devices, BPS2 and BPS1, agree with each other within theier one sigma statistical uncertainties, i.e., approximately 3 % for 147Pm and 1.5 % to 1.8 % for 85Kr, 90Sr/90Y and 106Ru/106Rh radiation qualities. Therefore, as of approximately mid 2023, PTB will change from the 2004 to 2006 version of ISO 6980 to the revised version from 2022 and from the old beta primary standard, BPS1 (i.e., the Böhm chamber) to the new one, BPS2.

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A NEW DOSE DETERMINATION METHOD FOR HP(3) AND DP LENS FOR BETA REFERENCE RADIATION QUALITIES

Teng

Song

Liu

et al. 2023

Radiation Protection Dosimetry

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For the purpose of obtaining the smaller uncertainties for Hp(3) and Dp lens in 90Sr/90Y beta reference fields, a new dose determination method based on the Monte-Carlo simulation was proposed. The conversion coefficients from the absorbed dose in air, at the reference point of the extrapolation ionisation chamber, Dair, det to Hp(3; α) and the conversion factors from Dair, det to Dp lens(α) were calculated with EGSnrc, respectively, for the irradiation angles from 0° to 60°. Compared with the dose determination method in International Organization for Standardization (ISO) 6980 standard, the uncertainty reductions of 7.7–52.8% for Hp(3; α) and 7.9–55.0% for Dp lens(α) were achieved, respectively. In addition, for the conversion coefficients from the reference absorbed dose DR to Hp(3; α), the calculations were performed for more irradiation conditions, which are not included in the current ISO 6980 standard. For the calculations of the conversion factors from DR to Dp lens(α), the eye and head phantoms with Chinese characteristics were utilised, which makes the conversion factors more suitable for use in China.

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Conversion coefficients from absorbed dose to tissue to the newly proposed ICRU/ICRP operational quantities for radiation protection for beta reference radiation qualities

Cited by 3 publications

References 13 publications

Sievert or Gray: Dose Quantities and Protection Levels in Emergency Exposure

Sievert or Gray: Dose Quantities and Protection Levels in Emergency Exposure

New beta primary standard (BPS2) and revised ISO 6980 at PTB

A NEW DOSE DETERMINATION METHOD FOR HP(3) AND DP LENS FOR BETA REFERENCE RADIATION QUALITIES

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