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Off-label magnetic resonance imaging of an InterStim II sacral nerve stimulator device

Andrew Fry1, Nikhil Kotnis1, Russel Edward1

  • 1Department of Medical Imaging and Medical Physics, Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, UK.

BJR Case Reports
|October 27, 2018
PubMed

Insights

Magnetic Resonance Imaging (MRI) of the hand is safe for patients with the InterStim II sacral nerve stimulator. This study demonstrates successful MRI scans without device malfunction, expanding imaging possibilities.

Area of Science:

  • Medical Imaging
  • Neuromodulation

Background:

  • The InterStim II sacral nerve stimulator is approved for head MRI only; other body areas are contraindicated.
  • Manufacturer warnings restrict MRI use in patients with InterStim II devices due to potential risks.

Observation:

  • This report details a successful MRI examination of the left hand in a patient with an InterStim II device.
  • The procedure involved careful risk-benefit assessment, patient positioning, and coil selection.

Findings:

  • The MRI scan of the left hand was completed without incident.
  • The patient reported full functioning of the InterStim II device post-scan.
  • Minimal additional risks were identified and managed effectively.

Implications:

  • MRI of the hand is feasible in patients with InterStim II implants using specific safety protocols.
  • Further research into the safety of MRI in other body regions for InterStim II patients is warranted.

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