| Magnetic field threshold for accurate electrocardiography in the MRI environment. | |
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MedLine Citation:
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PMID: 20890989 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Although the electrocardiogram is known to be nondiagnostic within the bore of any high-field magnet due to the magnetohydrodynamic effect, there are an increasing number of applications that require accurate electrocardiogram monitoring of a patient inside the MRI room but outside of the magnet bore. Magnetohydrodynamic effects on the ST segment of the electrocardiogram waveform were investigated in six subjects at magnetic field strengths ranging from 6.4 mT to 652 mT at the aortic midarch, and the electrocardiogram was found to be accurate at magnetic fields below 70 mT. This corresponds to a distance of 160 cm from the isocenter and 80 cm from the bore entrance for the 1.5-T MRI system used in this study. These results can be translated to any MRI system, with knowledge of the fringe field. Accurate electrocardiogram monitoring is feasible in close proximity to the MRI magnet, such as during and after pharmacologic or exercise stress, or interventional or surgical procedures performed in the MRI room. |
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Authors:
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Mihaela Jekic; Yu Ding; Roger Dzwonczyk; Patrick Burns; Subha V Raman; Orlando P Simonetti |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Magnetic resonance in medicine : official journal of the Society of Magnetic Resonance in Medicine / Society of Magnetic Resonance in Medicine Volume: 64 ISSN: 1522-2594 ISO Abbreviation: Magn Reson Med Publication Date: 2010 Dec |
Date Detail:
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Created Date: 2010-11-25 Completed Date: 2011-04-19 Revised Date: 2011-12-21 |
Medline Journal Info:
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Nlm Unique ID: 8505245 Medline TA: Magn Reson Med Country: United States |
Other Details:
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Languages: eng Pagination: 1586-91 Citation Subset: IM |
Copyright Information:
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Copyright © 2010 Wiley-Liss, Inc. |
Affiliation:
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Department of Biomedical Engineering, The Ohio State University, Columbus, Ohio, USA. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adult Blood Flow Velocity Coronary Circulation* Electrocardiography* Electromagnetic Fields* Humans Image Processing, Computer-Assisted Linear Models Magnetic Resonance Imaging / methods* Patient Positioning Signal Processing, Computer-Assisted |
| Grant Support | |
ID/Acronym/Agency:
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R01 HL102450-02/HL/NHLBI NIH HHS; R41 HL096212-01A1/HL/NHLBI NIH HHS |
| Comments/Corrections | |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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