| Assessment of radiofrequency self-heating around a metallic wire with MR T1-based thermometry. | |
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MedLine Citation:
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PMID: 21360744 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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Heat produced by a magnetic resonance (MR) imaging sequence in the vicinity of a conductive wire (pacemaker, electrodes, or catheter), is a subject of interest for the assessment of patient safety during imaging. For this purpose, the measurement of temperature rises during an MR imaging sequence using MR T(1) -based thermometry provides several advantages, mainly in its ability to retrieve in situ real-time thermal maps. Recent studies investigated the heat produced by an independent radiofrequency pulse, assessing MR imaging sequence heating using a specific MR thermometry sequence. This study focuses on self-heating for which the radiofrequency pulses used for measuring temperature create the heat. An experimental design was set up to evaluate T(1) -based thermometry self-heating using a coupled/decoupled wire and to compare it with a reference temperature gathered by an optical fiber device. For the tested experimental set up, T(1) -based thermometry is in fairly good agreement with optical fiber reference temperature. Magn Reson Med, 2011. © 2011 Wiley-Liss, Inc. |
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Authors:
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V Detti; D Grenier; E Perrin; O Beuf |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-2-28 |
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: - ISSN: 1522-2594 ISO Abbreviation: - Publication Date: 2011 Feb |
Date Detail:
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Created Date: 2011-3-1 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8505245 Medline TA: Magn Reson Med Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
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Copyright © 2011 Wiley-Liss, Inc. |
Affiliation:
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Université de Lyon, CREATIS, UMR CNRS 5220, Inserm U 1044, Insa-Lyon, Université Lyon, Villeurbanne, France. valerie.detti@creatis.univ-lyon1.fr. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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