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Free Content An Update on Programmable CSF Shunt Valves: Identification, MR Imaging Safety and Potential Pitfalls

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Programmable shunt valves are commonly used devices for the treatment of hydrocephalus. Unlike fixed shunt valves, programmable devices allow the operator to alter the amount of CSF drainage without the need for shunt revision or valve replacement. With their increased use, many different programmable shunt valves have been developed by various manufacturers; each programmable shunt valve has a distinct radiographic appearance and CSF drainage setting. Because of potential interactions with MR imaging scanners, which can alter programmable shunt valve function, understanding and accurately reporting these devices is essential.

Learning Objectives: Identify commonly used programmable shunt valves and understand their CSF drainage settings to enable the detection of device alterations after MR imaging scanning.
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Keywords: FSV = fixed shunt valve; PSV = programmable shunt valve; SM8 = Sophysa Mini 8; SPV = Sophysa Polaris valve

Document Type: Research Article

Publication date: February 1, 2020

More about this publication?
  • Neurographics is the peer-reviewed, bimonthly educational journal of the American Society of Neuroradiology. The journal comprises articles selected from material presented at the ASNR Annual Meeting. Neurographics also publishes other high-quality submissions that are primarily educational and have a high emphasis on a pictorial approach. Neurographics offers CME credit for reading review articles and completing quiz-based self-assessment activities.

    Visit to view all available CME courses.

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