| Magnetic field gradients in the MRI suite and their effects on aneurysm clips. | |
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MedLine Citation:
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PMID: 8985946 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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We studied magnetic field intensity in the magnetic resonance imaging suite at our hospital and its possible effect on several different types of aneurysm clips, including one Heifetz 17-7 PH, six Heifetz Elgiloy, one Mayfield, six Perneczky, fifteen Sugita, one Sundt-Kees Variangle, four Variangle-McFadden and fifteen Yasargil clips. We carefully observed the clips for any translational or rotational movements along the path from the door towards the magnetic resonance imaging gantry. The magnetic field strength was 0.04 kiloGauss at the entrance of the room, with an acute increase of magnetic strength at 310 cm away from the entrance to the room, 90 cm to the entrance of the gantry. The magnetic strength continued to increase at a rate of 1.0-1.5 kiloGauss for every 20 cm up to the entrance to the gantry. No movement was observed in any of the clips at the entrance to the suite except for the Heifetz 17-7 PH clip, which showed small movement in the longitudinal plane of the clip. At the entrance to the gantry, the Heifetz 17-7 PH, Sundt-Kees Variangle, and Mayfield clips were aligned on the walls of the test container perpendicular to the magnetic bore. The, Heifetz Elgiloy, Perneczky, Sugita, Variangle-McFadden, and Yasargil clips showed no movement throughout the path of the stretcher or near the gantry. |
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Authors:
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M Dujovny; N Dujovny; D Fiat; N R Gundamraj; M Misra; M Serdar Alp; Y J Zhao |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Neurological research Volume: 18 ISSN: 0161-6412 ISO Abbreviation: Neurol. Res. Publication Date: 1996 Dec |
Date Detail:
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Created Date: 1997-03-26 Completed Date: 1997-03-26 Revised Date: 2004-11-17 |
Medline Journal Info:
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Nlm Unique ID: 7905298 Medline TA: Neurol Res Country: ENGLAND |
Other Details:
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Languages: eng Pagination: 483-6 Citation Subset: IM |
Affiliation:
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Department of Neurosurgery, University of Illinois at Chicago 60612, USA. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Aneurysm
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surgery* Equipment Safety Humans Magnetic Resonance Imaging / standards* Magnetics* Quality Control Surgical Instruments* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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