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Magnetically programmable shunt valve: MRI at 3-Tesla

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Title: Magnetically programmable shunt valve: MRI at 3-Tesla
Authors: Shellock, Frank G.1,2 frank.shellock@gte.net, Wilson, Stephen F.3, Mauge, Christophe P.3
Source: Magnetic Resonance Imaging (0730725X). Sep2007, Vol. 25 Issue 7, p1116-1121. 6p.
Subjects: Cerebrospinal fluid, Brain diseases, Magnetic resonance imaging, Diagnostic imaging
Abstract: Abstract: 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°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. [Copyright &y& Elsevier]
Copyright of Magnetic Resonance Imaging (0730725X) is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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PubType: Academic Journal
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  Data: Magnetically programmable shunt valve: MRI at 3-Tesla
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  Data: <searchLink fieldCode="AR" term="%22Shellock%2C+Frank+G%2E%22">Shellock, Frank G.</searchLink><relatesTo>1,2</relatesTo><i> frank.shellock@gte.net</i><br /><searchLink fieldCode="AR" term="%22Wilson%2C+Stephen+F%2E%22">Wilson, Stephen F.</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Mauge%2C+Christophe+P%2E%22">Mauge, Christophe P.</searchLink><relatesTo>3</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22Magnetic+Resonance+Imaging+%280730725X%29%22">Magnetic Resonance Imaging (0730725X)</searchLink>. Sep2007, Vol. 25 Issue 7, p1116-1121. 6p.
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  Data: <searchLink fieldCode="DE" term="%22Cerebrospinal+fluid%22">Cerebrospinal fluid</searchLink><br /><searchLink fieldCode="DE" term="%22Brain+diseases%22">Brain diseases</searchLink><br /><searchLink fieldCode="DE" term="%22Magnetic+resonance+imaging%22">Magnetic resonance imaging</searchLink><br /><searchLink fieldCode="DE" term="%22Diagnostic+imaging%22">Diagnostic imaging</searchLink>
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  Label: Abstract
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  Data: Abstract: 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°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. [Copyright &y& Elsevier]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Magnetic Resonance Imaging (0730725X) is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=26248913
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      – SubjectFull: Brain diseases
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      – SubjectFull: Magnetic resonance imaging
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              Text: Sep2007
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              Y: 2007
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