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Related Experiment Videos

Parathyroid adenoma radiation dose simulator.

John Gough1, Mark Anliker, Michael E Spieth

  • 1Radiation Safety Office, Department of Radiology, Marshfield Clinic, Marshfield, Wisconsin 54449, USA.

Clinical Medicine & Research
|June 3, 2005
PubMed
Summary

Pathology personnel handling parathyroid specimens after radioisotope localization procedures face minimal radiation exposure. Studies show that radiation doses from these samples are low, negating the need for extended holding times.

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Area of Science:

  • Nuclear Medicine
  • Pathology
  • Radiation Safety

Background:

  • Increasing use of radioisotope localization procedures has raised concerns about radiation exposure to pathology personnel from parathyroid specimens.
  • A radiation safety officer was consulted to assess personnel radiation protection measures.

Purpose of the Study:

  • To analyze radiation exposure risks associated with handling parathyroid specimens post radioisotope localization.
  • To determine if extended holding times for specimens are necessary to mitigate radiation exposure.

Main Methods:

  • Simulated parathyroid specimens with varying activities and masses were analyzed.
  • Radiation dose rates were measured using calibrated survey meters (Ludlum Model 14C and Model 3) and a gamma guidance system (USSC Navigator).

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  • Sample count rates and dose rates were recorded and analyzed.

    • Main Results:

    • Observed sample count rates ranged from 139 to 2,830 counts/second, with most falling within the typical surgical range (100-1,000 counts/second).
    • Contact dose rates from specimens ranged from 0.17 to 4.0 mR/hour, depending on the instrument, activity, and volume.
    • A linear relationship was observed between sample activity and dose rate for a given volume.

    Conclusions:

    • The measured radiation doses from parathyroid specimens are significantly low.
    • There is no requirement to hold parathyroid specimens for 24 to 48 hours post-surgery for handling.
    • Pathology personnel are unlikely to receive substantial radiation exposure from these specimens.