A 3D model of magnetohydrodynamic voltages: Comparison with voltages observed on the surface ECG during cardiac MRI

G. M. Nijm; S. Swiryn; A. C. Larson; A. V. Sahakian

doi:10.1109/CIC.2007.4745417

A 3D model of magnetohydrodynamic voltages: Comparison with voltages observed on the surface ECG during cardiac MRI

G. M. Nijm, S. Swiryn, A. C. Larson, A. V. Sahakian

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

6 Scopus citations

Abstract

The magnetohydrodynamic (MHD) effect generates voltages which distort the ECG obtained during cardiac MRI. Consequently, MHD voltages result in triggering problems for MR image acquisition. In addition, since the MHD effect is related to blood flow, analysis of it not only as interference, but also as a signal may provide useful blood flow information. Comsol Multiphysics modeling software was used to compute and model the MHD voltages in 3D. These voltages were compared with MHD voltages obtained experimentally from the subtraction of ECGs taken outside the MRI magnet from ECGs taken inside the magnet. The maximum MHD voltage magnitude for the experimental data was 0.2 mV and was 3.04 mV for the modeled data when calculated on the surface of the uniform volume conductor. By modeling MHD voltages in 3D, we can learn about their effect on the ECG during cardiac MRI.

Original language	English (US)
Title of host publication	Computers in Cardiology 2007, CAR 2007
Pages	45-48
Number of pages	4
DOIs	https://doi.org/10.1109/CIC.2007.4745417
State	Published - 2007
Event	Computers in Cardiology 2007, CAR 2007 - Durham, NC, United States Duration: Sep 30 2007 → Oct 3 2007

Publication series

Name	Computers in Cardiology
Volume	34
ISSN (Print)	0276-6574

Other

Other	Computers in Cardiology 2007, CAR 2007
Country/Territory	United States
City	Durham, NC
Period	9/30/07 → 10/3/07

ASJC Scopus subject areas

Computer Science Applications
Cardiology and Cardiovascular Medicine

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10.1109/CIC.2007.4745417

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title = "A 3D model of magnetohydrodynamic voltages: Comparison with voltages observed on the surface ECG during cardiac MRI",

abstract = "The magnetohydrodynamic (MHD) effect generates voltages which distort the ECG obtained during cardiac MRI. Consequently, MHD voltages result in triggering problems for MR image acquisition. In addition, since the MHD effect is related to blood flow, analysis of it not only as interference, but also as a signal may provide useful blood flow information. Comsol Multiphysics modeling software was used to compute and model the MHD voltages in 3D. These voltages were compared with MHD voltages obtained experimentally from the subtraction of ECGs taken outside the MRI magnet from ECGs taken inside the magnet. The maximum MHD voltage magnitude for the experimental data was 0.2 mV and was 3.04 mV for the modeled data when calculated on the surface of the uniform volume conductor. By modeling MHD voltages in 3D, we can learn about their effect on the ECG during cardiac MRI.",

author = "Nijm, {G. M.} and S. Swiryn and Larson, {A. C.} and Sahakian, {A. V.}",

year = "2007",

doi = "10.1109/CIC.2007.4745417",

language = "English (US)",

isbn = "9781424425334",

series = "Computers in Cardiology",

pages = "45--48",

booktitle = "Computers in Cardiology 2007, CAR 2007",

note = "Computers in Cardiology 2007, CAR 2007 ; Conference date: 30-09-2007 Through 03-10-2007",

}

Nijm, GM, Swiryn, S, Larson, AC & Sahakian, AV 2007, A 3D model of magnetohydrodynamic voltages: Comparison with voltages observed on the surface ECG during cardiac MRI. in Computers in Cardiology 2007, CAR 2007., 4745417, Computers in Cardiology, vol. 34, pp. 45-48, Computers in Cardiology 2007, CAR 2007, Durham, NC, United States, 9/30/07. https://doi.org/10.1109/CIC.2007.4745417

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AU - Nijm, G. M.

AU - Swiryn, S.

AU - Larson, A. C.

AU - Sahakian, A. V.

PY - 2007

Y1 - 2007

N2 - The magnetohydrodynamic (MHD) effect generates voltages which distort the ECG obtained during cardiac MRI. Consequently, MHD voltages result in triggering problems for MR image acquisition. In addition, since the MHD effect is related to blood flow, analysis of it not only as interference, but also as a signal may provide useful blood flow information. Comsol Multiphysics modeling software was used to compute and model the MHD voltages in 3D. These voltages were compared with MHD voltages obtained experimentally from the subtraction of ECGs taken outside the MRI magnet from ECGs taken inside the magnet. The maximum MHD voltage magnitude for the experimental data was 0.2 mV and was 3.04 mV for the modeled data when calculated on the surface of the uniform volume conductor. By modeling MHD voltages in 3D, we can learn about their effect on the ECG during cardiac MRI.

AB - The magnetohydrodynamic (MHD) effect generates voltages which distort the ECG obtained during cardiac MRI. Consequently, MHD voltages result in triggering problems for MR image acquisition. In addition, since the MHD effect is related to blood flow, analysis of it not only as interference, but also as a signal may provide useful blood flow information. Comsol Multiphysics modeling software was used to compute and model the MHD voltages in 3D. These voltages were compared with MHD voltages obtained experimentally from the subtraction of ECGs taken outside the MRI magnet from ECGs taken inside the magnet. The maximum MHD voltage magnitude for the experimental data was 0.2 mV and was 3.04 mV for the modeled data when calculated on the surface of the uniform volume conductor. By modeling MHD voltages in 3D, we can learn about their effect on the ECG during cardiac MRI.

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A 3D model of magnetohydrodynamic voltages: Comparison with voltages observed on the surface ECG during cardiac MRI

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