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Dose to the interventional radiologist in CTF-guided procedures.

J G Alves1,2, S Sarmento3,4, J S Pereira5,6

  • 1Instituto Superior Técnico (IST), Laboratório de Proteção e Segurança Radiológica (LPSR), Universidade de Lisboa (UL), Estrada Nacional 10 (ao km 139,7), 2695-066, Bobadela LRS, Portugal. jgalves@ctn.tecnico.ulisboa.pt.

Radiation and Environmental Biophysics
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PubMed
Summary
This summary is machine-generated.

Interventional radiologists (IRs) face significant occupational radiation exposure, particularly to their dominant hand and fingers, during computed tomography fluoroscopy (CTF) procedures. Monitoring finger doses is crucial for improving radiation safety practices.

Keywords:
CTFDosimetryInterventional radiologyRadiation dose assessment

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Area of Science:

  • Medical Physics
  • Radiology
  • Occupational Health

Background:

  • Interventional radiology (IR) procedures utilize computed tomography fluoroscopy (CTF) for guidance.
  • Assessing occupational radiation dose is critical for protecting healthcare professionals.

Purpose of the Study:

  • To evaluate the occupational radiation dose for interventional radiologists during CTF-guided procedures.
  • To pinpoint the most exposed body areas, especially hands and fingers.
  • To propose recommendations for radiation safety and individual monitoring.

Main Methods:

  • Studied 53 CTF-guided procedures.
  • Utilized twelve whole-body dosimeters to measure personal dose equivalent (Hp(10) and Hp(0.07)) at various body locations (chest, waist, back, arms, knees, feet).
  • Employed specialized gloves with casings for extremity dosimeters to measure finger doses (Hp(0.07)).

Main Results:

  • Chest doses were higher than waist and back doses.
  • The dominant hand and left side showed the highest exposure.
  • Fingers (ring, middle, index) of the dominant hand were most exposed (36-39 mSv range); wrist doses were negligible.
  • Chest dose (Hp(10)) was higher above the lead apron than below.

Conclusions:

  • Interventional radiologists receive significant occupational radiation exposure, particularly to the fingers of the dominant hand.
  • Recommendations include consistent use of protective gear, monitoring chest dose above and below lead aprons, and focusing extremity monitoring on the middle finger of the dominant hand.
  • Wrist dosimetry is not recommended due to negligible dose values.