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Related Experiment Videos

Hand dose measurements in interventional radiology.

J P Felmlee1, P F McGough, R L Morin

  • 1Department of Diagnostic Radiology, Mayo Clinic and Foundation, Rochester, MN 55905.

Health Physics
|February 1, 1991
PubMed
Summary

Interventional radiologists receive an average hand radiation dose of 1.5 mGy per procedure. Hand dose decreases with increased distance from the patient, not fluoroscopic time.

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Area of Science:

  • Medical Physics
  • Radiology
  • Occupational Health

Background:

  • Interventional radiology procedures involve significant radiation exposure.
  • Monitoring hand radiation dose is crucial for occupational safety in radiology.

Purpose of the Study:

  • To measure hand radiation dose received by interventional radiologists.
  • To identify factors influencing hand dose during interventional radiology procedures.

Main Methods:

  • Thermoluminescence dosimeter (TLD) ring badges were used to measure hand dose.
  • Dose measurements were taken for over 30 interventional radiology examinations.
  • Data were collected from four radiologists using identical equipment.

Main Results:

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  • The average hand radiation dose was 1.5 mGy (150 mrad) per procedure.
  • Hand dose showed an inverse relationship with patient distance.
  • Fluoroscopic time was not a reliable indicator of hand dose due to variable hand positioning.

Conclusions:

  • Hand radiation exposure in interventional radiology is measurable and averages 1.5 mGy per case.
  • Maintaining distance from the patient is key to reducing hand dose.
  • Radiation safety protocols should consider hand positioning and distance, not solely fluoroscopic time.