Moving across the static magnetic field of a 1.5 T MRI scanner: Analysing compliance with Directive 2013/35/EU

Gurrera, Davide; Gallias, K.K.; Spanò, M.; Abbate, B.; Dalia, Francesca; Iacoviello, Giuseppina; Caputo, V.

doi:10.1016/j.ejmp.2018.11.004

Cited by 7 publications

(21 citation statements)

References 14 publications

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“…Also displayed in the figure are two almost coincident straight lines, the black one being the best fit line, the other representing "perfect" modeling, i.e., y = x. As a result, despite the inherent heteroscedasticity, adherence to the model as measured by the Pearson's correlation coefficient is 0.97 (as it was in the case of the 1.5 T machines analyzed in Gurrera et al, 2019). The estimated values for the two unknowns x and y (Gurrera et al, 2019) are 69 and 8 cm, respectively.…”

Section: The Fitmentioning

confidence: 91%

“…Once conformed to the measured values, the dipole model in Gurrera et al (2019) provides, in the case of the 3.0 T machine here analyzed, the response shown in Figure 5, displaying the scatter plot of all the estimated B values vs. the raw measures. Also displayed in the figure are two almost coincident straight lines, the black one being the best fit line, the other representing "perfect" modeling, i.e., y = x.…”

Section: The Fitmentioning

confidence: 96%

“…Particularly, the green line refers to the marker on the right temple, the orange line to the right hand, and the violet line to the right foot. necessary for the fit (Gurrera et al, 2019), are 1.06 MA m 2 and 100 cm, respectively.…”

Section: Mapping the Stray Field In An Mri Roommentioning

confidence: 99%

“…This previous work in fact (Gurrera et al, 2019) suffers from some limitations. The MRI operators were supposed to move translationally and at a constant speed, with relevant parameters derived on the basis of general studies reporting allegedly normal walking speeds (Bohannon and Williams Andrews, 2011).…”

Section: Introductionmentioning

confidence: 96%

“…In other words, accurate simulation studies based on human movement data obtained in real conditions able to provide estimations of the exact effects of these fields are still lacking. The scope of the present experimental and modeling study is to provide these estimations for the first time by enhancing with experimental data the analysis provided in a previous modeling work (Gurrera et al, 2019). The general aim is to support general good practice methods for exposure assessment of personnel moving across the permanent static magnetic field straying from MRI scanners.…”

Section: Introductionmentioning

confidence: 99%

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Experimental and Modeling Analyses of Human Motion Across the Static Magnetic Field of an MRI Scanner

Gurrera

Leardini

Ortolani

et al. 2021

Front. Bioeng. Biotechnol.

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It is established that human movements in the vicinity of a permanent static magnetic field, such as those in magnetic resonance imaging (MRI) scanners induce electric fields in the human body; this raises potential severe risks of health to radiographers and cleaners exposed routinely to these fields in MRI rooms. The relevant directives and parameters, however, are based on theoretical models, and accurate studies on the simulation of the effects based on human movement data obtained in real conditions are still lacking. Two radiographers and one cleaner, familiar with MRI room activities and these directives, were gait analyzed during the execution of routine job motor tasks at different velocities. Full body motion was recorded in a gait laboratory arranged to reproduce the workspace of a room with an MRI full-body scanner. Body segments were tracked with clusters of at least three markers, from which position and velocity of the centroids were calculated. These were used as input in an established computer physical model able to map the stray field in an MRI room. The spatial peak values of the calculated electric field induced by motion of the head and of the entire body during these tasks, for both the health and sensory effects, were found smaller than the thresholds recommended by the European directives, for both 1.5 T and 3.0 T MRI. These tasks therefore seem to guarantee the safety of MRI room operators according to current professional good practice for exposure risks. Physical modeling and experimental measures of human motion can also support occupational medicine.

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Section: The Fitmentioning

confidence: 91%

Section: The Fitmentioning

confidence: 96%

Section: Mapping the Stray Field In An Mri Roommentioning

confidence: 99%

Section: Introductionmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Experimental and Modeling Analyses of Human Motion Across the Static Magnetic Field of an MRI Scanner

Gurrera

Leardini

Ortolani

et al. 2021

Front. Bioeng. Biotechnol.

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Occupational exposure to electromagnetic fields in magnetic resonance environment: an update on regulation, exposure assessment techniques, health risk evaluation, and surveillance

Hartwig

Virgili²,

Mattei³

et al. 2021

Med Biol Eng Comput

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Magnetic Resonance Imaging (MRI) is one of the most-used diagnostic imaging methods worldwide. There are ∼50,000 MRI scanners worldwide each of which involves a minimum of five workers from different disciplines who spend their working days around MRI scanners. This review analyses the state-of-art of literature about the several aspects of the occupational exposure to electromagnetic fields (EMF) in MRI: regulations, literature studies on biological effects, and health surveillance are addressed here in detail, along with a summary of the main approaches for exposure assessment. The original research papers published from 2013 to 2021 in international peer-reviewed journals, in the English language, are analysed, together with documents published by legislative bodies. The key points for each topic are identified and described together with useful tips for precise safeguarding of MRI operators, in terms of exposure assessment, studies on biological effects, and health surveillance.

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Évaluation de l’exposition au champ magnétique statique des manipulateurs en électroradiologie médicale d’un centre de recherche travaillant à proximité d’IRM 3T et 7T à l’aide d’un dispositif portable

Gimbert

Doyen

Weber

et al. 2023

Archives des Maladies Professionnelles et de l'Environnement

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Moving across the static magnetic field of a 1.5 T MRI scanner: Analysing compliance with Directive 2013/35/EU

Cited by 7 publications

References 14 publications

Experimental and Modeling Analyses of Human Motion Across the Static Magnetic Field of an MRI Scanner

Experimental and Modeling Analyses of Human Motion Across the Static Magnetic Field of an MRI Scanner

Occupational exposure to electromagnetic fields in magnetic resonance environment: an update on regulation, exposure assessment techniques, health risk evaluation, and surveillance

Évaluation de l’exposition au champ magnétique statique des manipulateurs en électroradiologie médicale d’un centre de recherche travaillant à proximité d’IRM 3T et 7T à l’aide d’un dispositif portable

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Moving across the static magnetic field of a 1.5 T MRI scanner: Analysing compliance with Directive 2013/35/EU

Cited by 7 publications

References 14 publications

Experimental and Modeling Analyses of Human Motion Across the Static Magnetic Field of an MRI Scanner

Experimental and Modeling Analyses of Human Motion Across the Static Magnetic Field of an MRI Scanner

Occupational exposure to electromagnetic fields in magnetic resonance environment: an update on regulation, exposure assessment techniques, health risk evaluation, and surveillance

Évaluation de l’exposition au champ magnétique statique des manipulateurs en électroradiologie médicale d’un centre de recherche travaillant à proximité d’IRM 3T et 7T à l’aide d’un dispositif portable

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Moving across the static magnetic field of a 1.5 T MRI scanner: Analysing compliance with Directive 2013/35/EU