| Magnetic resonance imaging compatibility of endoclips. | |
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MedLine Citation:
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PMID: 19555940 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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BACKGROUND: Endoscopic clipping devices are now available for treatment of GI hemorrhage and microperforations. All commercially available endoclips are labeled as magnetic resonance imaging (MRI) incompatible. No data are available about the actual magnetic field strength at which endoclips are first deflected nor the clinical relevance of the magnetic fields on endoclips used in GI endoscopy. OBJECTIVE: To determine the compatibility of different endoclips with MRI. DESIGN: Prospective observational study. SETTING: Experiment on excised pig tissue in an MRI scanner. INTERVENTIONS: The physical deflection and strength of attraction of endoclips: Resolution Clip, TriClip, QuickClip, and Ethicon Endo-surgery Clip were measured in different positions by using an MRI scanner at a field strength of 1.5 Tesla. Endoclips that demonstrated deflection were attached to a pig stomach and tested for detachment at a 1.5-Tesla MRI field strength. MAIN OUTCOME MEASUREMENTS: Physical deflection and detachment from pig stomach mucosa in an MRI scanner. RESULTS: All endoclips except the one made by Ethicon Endo-surgery demonstrated physical deflection under the tested conditions. The magnetic attraction was strongest for the Resolution Clip (0.7 gauss) compared with the TriClip (1.2 gauss) and the QuickClip (26.8 gauss). Only the Triclip demonstrated detachment from the pig gastric tissue under testing conditions. LIMITATIONS: A pig model and a small number of clips. CONCLUSIONS: The Ethicon Endo-surgery clip is compatible with MRI. All other clips showed deflection in a magnetic field, but only the TriClip demonstrated detachment from gastric tissue, and hence should be considered MRI incompatible. |
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Authors:
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Kanwar Rupinder S Gill; Robert A Pooley; Michael B Wallace |
Publication Detail:
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Type: Comparative Study; Journal Article Date: 2009-06-24 |
Journal Detail:
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Title: Gastrointestinal endoscopy Volume: 70 ISSN: 1097-6779 ISO Abbreviation: Gastrointest. Endosc. Publication Date: 2009 Sep |
Date Detail:
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Created Date: 2009-08-24 Completed Date: 2009-12-01 Revised Date: 2010-10-06 |
Medline Journal Info:
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Nlm Unique ID: 0010505 Medline TA: Gastrointest Endosc Country: United States |
Other Details:
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Languages: eng Pagination: 532-6 Citation Subset: IM |
Affiliation:
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Division of Gastroenterology and Hepatology, Mayo Clinic College of Medicine, Jacksonville, Florida 32224, USA. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Animals Disease Models, Animal Equipment Design Equipment Failure Equipment Failure Analysis Equipment Safety Gastroscopy / methods* Hemostasis, Endoscopic / methods* Magnetic Resonance Imaging* Sensitivity and Specificity Surgical Instruments* Swine |
| Comments/Corrections | |
Comment In:
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Gastrointest Endosc. 2010 Oct;72(4):905-6
[PMID:
20883874
]
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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