Cochlear implants: in vitro investigation of electromagnetic interference at MR imaging--compatibility and safety aspects

Radiology. 1998 Sep;208(3):700-8. doi: 10.1148/radiology.208.3.9722849.


In vitro experiments were performed to determine the compatibility of a cochlear implant at 0.2- and 1.5-T magnetic resonance (MR) imaging. Except for the torque at 1.5 T, all electromagnetic interferences remained within acceptable limits. MR imaging should be performed only if there is a strong medical indication, by following appropriate safety procedures. MR imaging at 0.2 T should be safe; at 1.5 T, however, the relative risks will have to be assessed.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Cochlear Implants*
  • Contraindications
  • Electromagnetic Fields / adverse effects*
  • Equipment Safety
  • Humans
  • Magnetic Resonance Imaging*
  • Phantoms, Imaging
  • Risk