ISO 18310-2:2021 Measurement and prediction of the ambient dose equivalent from patients receiving iodine 131 administration after thyroid ablation —Part 2: External effective dose of the caregivers after release from the hospital

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Measurement and prediction of the ambient dose equivalent from patients receiving iodine 131 administration after thyroid ablation —Part 2: External effective dose of the caregivers after release from the hospital由国际标准化组织于2021‑05‑10发布，适用于全球范围。

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INTERNATIONAL STANDARD ISO 18310-2:2021

Measurement and prediction of the ambient dose equivalent from patients receiving iodine 131 administration after thyroid ablation —

Part 2: External effective dose of the caregivers after release from the hospital

1 Scope

This document addresses the measurement methods, procedures and uncertainty estimation for the measurement, using a personal dosimeter, of the effective dose to the caregiver in the vicinity of the patient treated with radioiodine to ablate the thyroid.

The general requirements for the patient and caregiver and a guidance (see Annex A) for designated expert on instructing caregivers of discharged patients is considered to effectively measure the effective dose to the caregiver in the vicinity of the patient.

2 Normative references

The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

ISO 40371‑ , Radiological protection — X and gamma reference radiation for calibrating dosemeters and doserate meters and for determining their response as a function of photon energy — Part 1: Radiation characteristics and production methods

ISO 4037‑2 , Radiological protection — X and gamma reference radiation for calibrating dosemeters and doserate meters and for determining their response as a function of photon energy — Part 2: Dosimetry for radiation protection over the energy ranges from 8 keV to 1,3 MeV and 4 MeV to 9 MeV

ISO 4037‑3 , Radiological protection — X and gamma reference radiation for calibrating dosemeters and doserate meters and for determining their response as a function of photon energy — Part 3: Calibration of area and personal dosemeters and the measurement of their response as a function of energy and angle of incidence

ISO 4037‑4 , Radiological protection — X and gamma reference radiation for calibrating dosemeters and doserate meters and for determining their response as a function of photon energy — Part 4: Calibration of area and personal dosemeters in low energy X reference radiation fields

ISO 183101‑ , Measurement and prediction of the ambient dose equivalent from patients receiving iodine 131 administration after thyroid ablation — Part 1: During the hospitalization

ISO 29661, Reference radiation fields for radiation protection — Definitions and fundamental concepts

ISO/IEC Guide 99, International vocabulary of metrology — Basic and general concepts and associated terms (VIM)

ISO 18310-2:2021

3 Terms a nd definiti ons

For the purposes of this document, the terms and definitions given in ISO 40371‑ to ISO 4037‑4 , ISO/IEC Guide 99, ISO 29661 and the following apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— ISO Online browsing platform: available at https://www.iso.org/obp

— IEC Electropedia: available at http://www.electropedia.org/

3.1

caregiver

individual such as a family member, close friend, or accompanying person who willingly and voluntarily takes care of a discharged patient treated with radioiodine to ablate the thyroid remnants

3.2

calibration

operation under specified conditions that, in a first step, establishes a relation between the quantity values with measurement uncertainties provided by measurement standards and corresponding indications with associated measurement uncertainties and, in a second step, uses this information to establish a relation for obtaining a measurement result from an indication

3.3

effective dose

tissue-weighted sum of the equivalent doses in all specified tissues and organs of the body

3.4

electronic personal dosimeter

EPD

electronic device used for continual monitoring with live readout of accumulated radiation dose due to ionizing radiation

3.5

optically stimulated luminescence dosimeter

OSLD

radiation dosimeter used to measure ionizing radiation exposure from electrons trapped between the valence and conduction bands in the crystalline structure of certain minerals by optical stimulation of the material to emit light of a different wavelength

3.6

personal dosimeter

device, such as an electronic personal dosimeter (3.4), optically stimulated luminescence (3.5), radiophotoluminescent glass dosimeter (3.8) or thermoluminescent dosimeter (3.9), used for monitoring the personnel cumulative radiation dose due to ionizing radiation

3.7

131

I

131

iodine 131 ( I) that decays with a half‑ life of 8,02 d with beta and gamma emissions

131

Note 1 to entry: On decaying, I most often (89 % of the time) expend 971 keV of decay energy by transforming 131 131

into stable Xe in two steps with gamma decay following rapidly after beta decay. The primary emissions of I decay are beta particles with maximum energy of 606 keV and gamma rays of energy 364 keV. Major application 131

of I is for the direct radioisotope therapy to treat hyperthyroidism and some types of thyroid cancer.

3.8

radiophotoluminescent glass dosimeter

RPLD

radiation dosimeter which uses glass compound as the luminescent material

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