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Updated: Sep 26, 2026

Magnetically-Assisted Remote Controlled Microcatheter Tip Deflection under Magnetic Resonance Imaging
Published on: April 4, 2013
A retained Racz catheter fragment after epidural neurolysis: implications during magnetic resonance imaging
William J Perkins1, Dudley H Davis, Marc A Huntoon
1Departments of *Anesthesiology and †Neurologic Surgery, Mayo Clinic, Rochester, Minnesota.
Implications:
A retained ferromagnetic catheter used for epidurolysis obscured diagnostic magnetic resonance imaging of the lumbar spine. The implications of this are discussed in light of other reports of retained catheter fragments obtained from the Food and Drug Administration Manufacturer and Facility Device Experience Database (http://www.fda.gov/cdrh/maude.html).
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