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  MRI thermometry: Fast mapping of RF-induced heating along conductive wires

Ehses, P., Fidler, F., Nordbeck, P., Pracht, E., Waremuth, M., Jakob, P., et al. (2008). MRI thermometry: Fast mapping of RF-induced heating along conductive wires. Magnetic Resonance in Medicine, 60(2), 457-461. doi:10.1002/mrm.21417.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-C78B-6 Version Permalink: http://hdl.handle.net/21.11116/0000-0003-2FCC-4
Genre: Journal Article

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Ehses, P1, Author              
Fidler, F, Author
Nordbeck, P, Author
Pracht, ED, Author
Waremuth, M, Author
Jakob, PM, Author
Bauer, WR, Author
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1External Organizations, ou_persistent22              

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 Abstract: Conductive implants are in most cases a strict contraindication for MRI examinations, as RF pulses applied during the MRI measurement can lead to severe heating of the surrounding tissue. Understanding and mapping of these heating effects is therefore crucial for determining the circumstances under which patient examinations are safe. The use of fluoroptic probes is the standard procedure for monitoring these heating effects. However, the observed temperature increase is highly dependent on the positioning of such a probe, as it can only determine the temperature locally. Temperature mapping with MRI after RF heating can be used, but cooling effects during imaging lead to a significant underestimation of the heating effect. In this work, an MRI thermometry method was combined with an MRI heating sequence, allowing for temperature mapping during RF heating. This technique may provide new opportunities for implant safety investigations.

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 Dates: 2008-08
 Publication Status: Published in print
 Pages: -
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 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1002/mrm.21417
BibTex Citekey: EhsesFNPWJB2008
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Title: Magnetic Resonance in Medicine
Source Genre: Journal
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Publ. Info: New York : Wiley-Liss
Pages: - Volume / Issue: 60 (2) Sequence Number: - Start / End Page: 457 - 461 Identifier: ISSN: 0740-3194
CoNE: https://pure.mpg.de/cone/journals/resource/954925538149