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Interventional radiologists: occupational radiation doses and risks

L T Niklason1, M V Marx, H P Chan

  • 1Department of Radiology, Massachusetts General Hospital, Boston 02114.

Radiology
|June 1, 1993
PubMed
Summary
This summary is machine-generated.

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Interventional radiologists have low occupational radiation exposure, with mean annual effective doses comparable to natural background radiation. This suggests a minimal cancer risk throughout their careers.

Area of Science:

  • Medical Physics
  • Radiology
  • Occupational Health

Background:

  • Interventional radiologists face nonuniform occupational radiation doses, particularly to the head and extremities.
  • Lead aprons protect the trunk but may lead to higher doses in unprotected areas.

Purpose of the Study:

  • To quantify the occupational radiation dose received by interventional radiologists.
  • To assess the associated cancer risk based on effective dose measurements.

Main Methods:

  • Twenty-eight interventional radiologists from 17 institutions participated.
  • Thermoluminescent dosimeters were worn for 2 months (collar and under apron).
  • Doses were converted to effective dose (International Commission on Radiological Protection guidelines).

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Main Results:

  • Mean annual effective dose was 3.16 mSv (range: 0.37–10.1 mSv).
  • This is comparable to natural background radiation (3 mSv/year).
  • The mean dose is 6% of the recommended limit (50 mSv/year).

Conclusions:

  • Occupational radiation doses for interventional radiologists are generally low.
  • The estimated cancer risk is less than 1 in 10,000 for a career.
  • Effective dose monitoring provides a standardized measure of radiation risk.