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Electromagnetic Exposure of Personnel Involved in Cardiac MRI Examinations in 1.5T, 3T and 7T Scanners

Author

Listed:
  • Katarzyna Sklinda

    (Department of Radiology, Centre of Postgraduate Medical Education, Marymoncka 99/103, 01-813 Warszawa, Poland)

  • Jolanta Karpowicz

    (Department of Bioelectromagnetics, Central Institute for Labour Protection–National Research Institute (CIOP-PIB), Czerniakowska 16, 00-701 Warszawa, Poland)

  • Andrzej Stępniewski

    (ECOTECH-COMPLEX Centre, University of Maria Curie-Skłodowska, Głęboka 39, 20-612 Lublin, Poland)

Abstract

(1) Background: It has been hypothesised that a significant increase in the use of cardiac magnetic resonance (CMR), for example, when examining COVID-19 convalescents using magnetic resonance imaging (MRI), has an influence the exposure profiles of medical personnel to static magnetic fields (STmf). (2) Methods: Static exposure to STmf (SEmf) was recorded during activities that modelled performing CMR by radiographers. The motion-induced time variability of that exposure (TVEmf) was calculated from SEmf samples. The results were compared with: (i) labour law requirements; (ii) the distribution of vertigo perception probability near MRI magnets; and (iii) the exposure profile when actually performing a head MRI. (3) Results: The exposure profiles of personnel managing 42 CMR scans (modelled using medium (1.5T), high (3T) and ultrahigh (7T) field scanners) were significantly different than when managing a head MRI. The majority of SEmf and TVEmf samples (up to the 95th percentile) were at low vertigo perception probability (SEmf < 500 mT, TVEmf < 600 mT/s), but a small fraction were at medium/high levels; (4) Conclusion: Even under the “normal working conditions” defined for SEmf (STmf < 2T) by labour legislation (Directive 2013/35/EC), increased CMR usage increases vertigo-related hazards experienced by MRI personnel (a re-evaluation of electromagnetic safety hazards is suggested in the case of these or similar changes in work organisation).

Suggested Citation

  • Katarzyna Sklinda & Jolanta Karpowicz & Andrzej Stępniewski, 2021. "Electromagnetic Exposure of Personnel Involved in Cardiac MRI Examinations in 1.5T, 3T and 7T Scanners," IJERPH, MDPI, vol. 19(1), pages 1-16, December.
    • Handle: RePEc:gam:jijerp:v:19:y:2021:i:1:p:76-:d:708506
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    References listed on IDEAS

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    1. Jolanta Karpowicz & Maila Hietanen & Krzysztof Gryz, 2007. "Occupational risk from static magnetic fields of MRI scanners," Environment Systems and Decisions, Springer, vol. 27(4), pages 533-538, December.
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