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

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 fiel...

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Autores principales: Gurrera, Davide, Leardini, Alberto, Ortolani, Maurizio, Durante, Stefano, Caputo, Vittorio, Gallias, Karmenos K., Abbate, Boris F., Rinaldi, Calogero, Iacoviello, Giuseppina, Acri, Giuseppe, Vermiglio, Giuseppe, Marrale, Maurizio
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8131562/
https://www.ncbi.nlm.nih.gov/pubmed/34026738
http://dx.doi.org/10.3389/fbioe.2021.613616
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author Gurrera, Davide
Leardini, Alberto
Ortolani, Maurizio
Durante, Stefano
Caputo, Vittorio
Gallias, Karmenos K.
Abbate, Boris F.
Rinaldi, Calogero
Iacoviello, Giuseppina
Acri, Giuseppe
Vermiglio, Giuseppe
Marrale, Maurizio
author_facet Gurrera, Davide
Leardini, Alberto
Ortolani, Maurizio
Durante, Stefano
Caputo, Vittorio
Gallias, Karmenos K.
Abbate, Boris F.
Rinaldi, Calogero
Iacoviello, Giuseppina
Acri, Giuseppe
Vermiglio, Giuseppe
Marrale, Maurizio
author_sort Gurrera, Davide
collection PubMed
description 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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spelling pubmed-81315622021-05-20 Experimental and Modeling Analyses of Human Motion Across the Static Magnetic Field of an MRI Scanner Gurrera, Davide Leardini, Alberto Ortolani, Maurizio Durante, Stefano Caputo, Vittorio Gallias, Karmenos K. Abbate, Boris F. Rinaldi, Calogero Iacoviello, Giuseppina Acri, Giuseppe Vermiglio, Giuseppe Marrale, Maurizio Front Bioeng Biotechnol Bioengineering and Biotechnology 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. Frontiers Media S.A. 2021-05-05 /pmc/articles/PMC8131562/ /pubmed/34026738 http://dx.doi.org/10.3389/fbioe.2021.613616 Text en Copyright © 2021 Gurrera, Leardini, Ortolani, Durante, Caputo, Gallias, Abbate, Rinaldi, Iacoviello, Acri, Vermiglio and Marrale. https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Bioengineering and Biotechnology
Gurrera, Davide
Leardini, Alberto
Ortolani, Maurizio
Durante, Stefano
Caputo, Vittorio
Gallias, Karmenos K.
Abbate, Boris F.
Rinaldi, Calogero
Iacoviello, Giuseppina
Acri, Giuseppe
Vermiglio, Giuseppe
Marrale, Maurizio
Experimental and Modeling Analyses of Human Motion Across the Static Magnetic Field of an MRI Scanner
title Experimental and Modeling Analyses of Human Motion Across the Static Magnetic Field of an MRI Scanner
title_full Experimental and Modeling Analyses of Human Motion Across the Static Magnetic Field of an MRI Scanner
title_fullStr Experimental and Modeling Analyses of Human Motion Across the Static Magnetic Field of an MRI Scanner
title_full_unstemmed Experimental and Modeling Analyses of Human Motion Across the Static Magnetic Field of an MRI Scanner
title_short Experimental and Modeling Analyses of Human Motion Across the Static Magnetic Field of an MRI Scanner
title_sort experimental and modeling analyses of human motion across the static magnetic field of an mri scanner
topic Bioengineering and Biotechnology
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8131562/
https://www.ncbi.nlm.nih.gov/pubmed/34026738
http://dx.doi.org/10.3389/fbioe.2021.613616
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