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<title lang=en>Exposure System and Dosimetry for in vitro Studies of Biocompatibility of Pulse-Modulated RF Signals of Ultra High Field MRI.</title>
<creator>Zhadobov, Maxim</creator>
<creator>Ferrand, Guillaume</creator>
<creator>Luong, Michel</creator>
<creator>Soubere-Mahamoud, Yonis</creator>
<creator>Le Quement, Catherine</creator>
<creator>Carton, Pierre-Henri</creator>
<creator>Piret, Yves</creator>
<creator>Sauleau, Ronan</creator>
<creator>Le Drean, Yves</creator>
<contributor>Institut d'Electronique et de Télécommunications de Rennes (IETR) ; Université de Nantes (UN) - Université de Rennes 1 (UR1) - Institut National des Sciences Appliquées - Rennes (INSA Rennes) - CentraleSupélec - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>TREC : Transcription, Environment and Cancer ; Institut de recherche, santé, environnement et travail [Rennes] (Irset) ; Université d'Angers (UA) - Université des Antilles et de la Guyane (UAG) - Université de Rennes 1 (UR1) - École des Hautes Études en Santé Publique [EHESP] (EHESP) - Institut National de la Santé et de la Recherche Médicale (INSERM) - Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ) - Université d'Angers (UA) - Université des Antilles et de la Guyane (UAG) - Université de Rennes 1 (UR1) - École des Hautes Études en Santé Publique [EHESP] (EHESP) - Institut National de la Santé et de la Recherche Médicale (INSERM) - Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique )</contributor>
<description>International audience</description>
<source>ISSN: 0018-9294</source>
<source>IEEE Transactions on Biomedical Engineering</source>
<publisher>Institute of Electrical and Electronics Engineers</publisher>
<identifier>hal-00874329</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-00874329</identifier>
<source>https://hal.archives-ouvertes.fr/hal-00874329</source>
<source>IEEE Transactions on Biomedical Engineering, Institute of Electrical and Electronics Engineers, 2013, 60 (11), pp.3167-3175. 〈10.1109/TBME.2013.2270371〉</source>
<identifier>DOI : 10.1109/TBME.2013.2270371</identifier>
<relation>info:eu-repo/semantics/altIdentifier/doi/10.1109/TBME.2013.2270371</relation>
<identifier>PUBMED : 23799680</identifier>
<relation>info:eu-repo/semantics/altIdentifier/pmid/23799680</relation>
<language>en</language>
<subject lang=en>Biological effects</subject>
<subject lang=en>dosimetry</subject>
<subject lang=en>exposure system</subject>
<subject lang=en>in vitro studies</subject>
<subject lang=en>magnetic resonance imaging (MRI)</subject>
<subject lang=en>ultrahigh field</subject>
<subject>[SDV.CAN] Life Sciences [q-bio]/Cancer</subject>
<type>info:eu-repo/semantics/article</type>
<type>Journal articles</type>
<description lang=en>: A new set-up for exposure of human cells in vitro at 37°C to pulse-modulated 300 MHz and 500 MHz signals of future magnetic resonance imaging (MRI) systems is designed, built up, and characterized. Two dipole antennas, specifically designed for ultra high field MRI, are used as radiating structures. The electromagnetic (EM) field distribution inside the incubator containing the cells is computed, and it is shown to be in a good agreement with measurements. The electric field at the cell level is quantified numerically. Local, 1g average, and averaged over the culture medium volume SAR are provided along with the standard deviation values for each well. Temperature increments are measured inside the culture medium during the exposure using an optical fiber thermometer. Then we identify the pulse parameters corresponding to the thermal threshold of 1°C, usually considered as a threshold for thermally-induced biological effects. For these parameters, the induction of heat shock proteins is assessed to biologically verify a potential thermal response of cells. The data demonstrate that, under the considered experimental conditions, exposure to pulsemodulated radiations emulating typical ultra high field MRI signals, corresponding to temperature increments below 1°C, does not trigger any heat shock response in human brain cells.</description>
<date>2013-06-20</date>
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