TISSUE HEATING DUE TO ENDOCARDIAL LEADS DURING MRI SCANS - Numerical Models and Experimental Validation

Eugenio Mattei, Giovanni Calcagnini, Michele Triventi, Federica Censi, Pietro Bartolini, Veronica Piacentini, Stefano Pisa

2011

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.

Paper Citation

in Harvard Style

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 - Volume 1: BIODEVICES, (BIOSTEC 2011) ISBN 978-989-8425-37-9, pages 378-381. DOI: 10.5220/0003163503780381

in Bibtex Style

@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 - Volume 1: BIODEVICES, (BIOSTEC 2011)},
year={2011},
pages={378-381},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0003163503780381},
isbn={978-989-8425-37-9},
}

in EndNote Style

TY - CONF
JO - Proceedings of the International Conference on Biomedical Electronics and Devices - Volume 1: BIODEVICES, (BIOSTEC 2011)
TI - TISSUE HEATING DUE TO ENDOCARDIAL LEADS DURING MRI SCANS - Numerical Models and Experimental Validation
SN - 978-989-8425-37-9
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