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Occupational exposure in a PET/CT facility using two different automatic infusion systems.

Kirill Skovorodko1, Milda Bareikė2, Arūnas Gudelis1

  • 1State Research Institute Center for Physical Sciences and Technology (FTMC), Savanorių Ave. 231, 02300 Vilnius, Lithuania.

Physica Medica : PM : an International Journal Devoted to the Applications of Physics to Medicine and Biology : Official Journal of the Italian Association of Biomedical Physics (AIFB)
|September 1, 2020
PubMed
Summary

Occupational radiation exposure in PET/CT departments can be reduced through staff monitoring with active personal dosimeters (APD) and using automated systems. These measures help optimize safety protocols for personnel handling radiopharmaceuticals.

Keywords:
18F-FDGInfusion systemNuclear medicineOccupational exposurePET/CTRadiation protectionRadionuclide activity meter

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Area of Science:

  • Nuclear Medicine
  • Radiological Protection
  • Medical Physics

Background:

  • Positron Emission Tomography/Computed Tomography (PET/CT) departments involve handling radioactive materials, necessitating careful monitoring of occupational radiation exposure.
  • Understanding radiation dose distribution across various operational stages and staff roles is crucial for effective radiation safety management.

Purpose of the Study:

  • To measure occupational exposure using active personal dosimeters (APD) in a PET/CT department.
  • To compare radiation doses associated with two different automatic injection/infusion systems (IRIDE and ALTHEA/WIS).
  • To evaluate the effectiveness of implemented radiation exposure optimization strategies.

Main Methods:

  • Active personal dosimeters (APD) were used to monitor radiation exposure in medical physicists, radiology technologists, and administrative staff from 2014 to 2018.
  • Data were collected during various operational stages, including radiopharmaceutical handling, dispensing, injection, and patient procedures.
  • Two automatic systems, IRIDE and ALTHEA/WIS, were assessed for their impact on radiation doses during dispensing and injection of 18F-FDG.

Main Results:

  • Radiology technologists performing injections received the highest doses, averaging 1.72 ± 0.33 μSv (ALTHEA/WIS) and 1.16 ± 0.11 μSv (IRIDE) per study.
  • Accompanying patients and scan procedures resulted in an average dose of 0.52 ± 0.07 μSv.
  • Medical physicists and administrative staff received lower average doses of 0.29 ± 0.09 μSv and 0.30 ± 0.15 μSv, respectively.

Conclusions:

  • Occupational exposure in PET/CT is significantly influenced by the specific tasks performed, with injection procedures posing the highest risk.
  • The use of automatic infusion systems and continuous staff monitoring with APD are effective strategies for optimizing radiation safety.
  • Implementing a strong radiation safety culture, alongside technological solutions, is key to minimizing occupational radiation doses.