| Catheter visualization using locally induced, actively controlled field inhomogeneities. | |
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MedLine Citation:
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PMID: 9256105 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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A new technique for visualization of interventional devices using MR is presented. A prototype catheter was equipped with a thin copper wire loop, leading from the proximal end to the tip and back. A small current (10-150 mA) through these two parts of a wire induces a local magnetic field along the catheter. Introduction of this catheter into the main magnetic field of the MR imager locally disturbs the homogeneity of the magnetic field. Image locations within the locally induced fields appear dark due to signal loss, and the extent of this effect can be varied during the procedure by simply adjusting the current. Different dedicated wire configurations allow visualization of the catheter in its whole length or in parts, i.e., with markers for balloons. Fast gradient echo sequences that provide a bright signal from inflowing blood are used for rapid imaging. |
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Authors:
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A Glowinski; G Adam; A Bücker; J Neuerburg; J J van Vaals; R W Günther |
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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: 38 ISSN: 0740-3194 ISO Abbreviation: Magn Reson Med Publication Date: 1997 Aug |
Date Detail:
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Created Date: 1997-09-24 Completed Date: 1997-09-24 Revised Date: 2003-11-14 |
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: 253-8 Citation Subset: IM |
Affiliation:
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Clinic for Diagnostic Radiology, University of Technology Aachen, Germany. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Animals Catheterization* / instrumentation Magnetic Resonance Angiography / instrumentation, methods* Phantoms, Imaging Swine |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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