| Magnetically programmable shunt valve: MRI at 3-Tesla. | |
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MedLine Citation:
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PMID: 17707175 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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A magnetically programmable cerebrospinal fluid (CSF) shunt valve (Codman Hakim Programmable Valve, Codman, a Johnson & Johnson Company, Raynham, MA) was assessed for magnetic field interactions, heating, artifacts and functional changes at 3-Tesla. The programmable valve showed minor magnetic field interactions and heating (+0.4 degrees C). Artifacts were relatively large in relation to the size and shape of this implant and, as such, may create a problem if the area of interest is in proximity to this implant. While multiple exposures and various magnetic resonance imaging (MRI) conditions at 3-Tesla changed the settings of some valves (i.e., reprogramming was needed), the function of the programmable valve was not permanently affected. Therefore, this magnetically programmable CSF shunt valve is acceptable for a patient undergoing MRI at 3-Tesla or less when specific safety guidelines are followed, including resetting the valve, as needed. |
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Authors:
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Frank G Shellock; Stephen F Wilson; Christophe P Mauge |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2007-01-19 |
Journal Detail:
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Title: Magnetic resonance imaging Volume: 25 ISSN: 0730-725X ISO Abbreviation: Magn Reson Imaging Publication Date: 2007 Sep |
Date Detail:
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Created Date: 2007-08-20 Completed Date: 2007-12-19 Revised Date: 2008-11-21 |
Medline Journal Info:
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Nlm Unique ID: 8214883 Medline TA: Magn Reson Imaging Country: United States |
Other Details:
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Languages: eng Pagination: 1116-21 Citation Subset: IM |
Affiliation:
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Keck School of Medicine, University of Southern California, Los Angeles, CA, USA. frank.shellock@gte.net |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Artifacts Cerebrospinal Fluid Shunts / instrumentation* Equipment Design Equipment Failure Analysis Hot Temperature Humans Magnetic Resonance Imaging / methods* Torque |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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