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Authors: Eugenio Mattei 1 ; Giovanni Calcagnini 1 ; Michele Triventi 1 ; Federica Censi 1 ; Pietro Bartolini 1 ; Veronica Piacentini 2 and Stefano Pisa 2

Affiliations: 1 Italian National Institute of Health, Italy ; 2 Sapienza University of Rome, Italy

Keyword(s): Endocardial Leads, Magnetic Resonance Imaging, Heating, Numerical Models.

Related Ontology Subjects/Areas/Topics: Bio-Electromagnetism ; Biomedical Engineering ; Biomedical Instrumentation ; Biomedical Instruments and Devices

Abstract: Magnetic Resonance Imaging (MRI) tissue heating due to implanted leads represents a major concern for the safety of patients bearing metallic devices. In this work temperature measurements were performed to validate the typical solutions adapted as endocardial lead models, that are a thin bare metal wire and an insulated one. Both experimental and numerical analysis was performed in the frequency range between 10kHz and 128MHz ( frequencies of the gradient and RF fields of MRI systems). We found that the bare wire is not a reliable model to study the RF heating locally induced at the lead tip. At low frequencies (<1MHz), the PM lead can be properly modelled as an insulated thin metal wire, providing that the actual resistivity of the lead is also modelled. As frequency increases, such a model becomes less accurate and different solutions must be adopted.

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Paper citation in several formats:
Mattei, E.; Calcagnini, G.; Triventi, M.; Censi, F.; Bartolini, P.; Piacentini, V. and Pisa, S. (2011). TISSUE HEATING DUE TO ENDOCARDIAL LEADS DURING MRI SCANS - Numerical Models and Experimental Validation. In Proceedings of the International Conference on Biomedical Electronics and Devices (BIOSTEC 2011) - BIODEVICES; ISBN 978-989-8425-37-9; ISSN 2184-4305, SciTePress, pages 378-381. DOI: 10.5220/0003163503780381

@conference{biodevices11,
author={Eugenio Mattei. and Giovanni Calcagnini. and Michele Triventi. and Federica Censi. and Pietro Bartolini. and Veronica Piacentini. and Stefano Pisa.},
title={TISSUE HEATING DUE TO ENDOCARDIAL LEADS DURING MRI SCANS - Numerical Models and Experimental Validation},
booktitle={Proceedings of the International Conference on Biomedical Electronics and Devices (BIOSTEC 2011) - BIODEVICES},
year={2011},
pages={378-381},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0003163503780381},
isbn={978-989-8425-37-9},
issn={2184-4305},
}

TY - CONF

JO - Proceedings of the International Conference on Biomedical Electronics and Devices (BIOSTEC 2011) - BIODEVICES
TI - TISSUE HEATING DUE TO ENDOCARDIAL LEADS DURING MRI SCANS - Numerical Models and Experimental Validation
SN - 978-989-8425-37-9
IS - 2184-4305
AU - Mattei, E.
AU - Calcagnini, G.
AU - Triventi, M.
AU - Censi, F.
AU - Bartolini, P.
AU - Piacentini, V.
AU - Pisa, S.
PY - 2011
SP - 378
EP - 381
DO - 10.5220/0003163503780381
PB - SciTePress

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