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Use of effective dose.

J D Harrison1, M Balonov2, C J Martin3

  • 1Oxford Brookes University, Faculty of Health and Life Sciences, Oxford OX3 0BP, UK john.harrison@phe.gov.uk.

Annals of the ICRP
|March 17, 2016
PubMed
Summary
This summary is machine-generated.

The International Commission on Radiological Protection proposes refining dose quantities. Equivalent dose may become an intermediate step, with absorbed dose used for specific organ limits, and effective dose serving as a rough risk indicator.

Keywords:
Absorbed doseDeterministic riskEffective doseEquivalent doseStochastic risk

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Area of Science:

  • Radiological Protection
  • Radiation Dosimetry
  • Health Physics

Background:

  • International Commission on Radiological Protection (ICRP) Publication 103 detailed effective and equivalent dose.
  • Effective dose is a robust quantity for radiation protection principles.
  • Practical application questions led to an ICRP Task Group.

Purpose of the Study:

  • To present two key proposals from the ICRP Task Group for consideration.
  • To address confusion surrounding the use of equivalent dose and effective dose.
  • To suggest revisions for practical radiation protection quantity application.

Main Methods:

  • Review of ICRP Task Group proposals.
  • Analysis of the utility and application of effective dose and equivalent dose.
  • Consideration of absorbed dose for specific organ limits.

Main Results:

  • Proposal 1: Equivalent dose to be an intermediate calculation step, with absorbed dose for skin, hands, feet, and lens limits.
  • Proposal 2: Effective dose's use as a risk measure in medical practice is beyond its intent, but can serve as a rough risk indicator with caveats.

Conclusions:

  • Revising the use of equivalent dose and effective dose can improve clarity and application in radiation protection.
  • Absorbed dose is proposed for deterministic effect limits in specific organs.
  • Effective dose can be a cautious risk indicator at low doses, considering biological factors.