Effect of 7.0 Tesla MRI on upper eyelid implants

Ophthalmic Plast Reconstr Surg. Nov-Dec 2006;22(6):480-2. doi: 10.1097/01.iop.0000240807.42320.d9.

Abstract

To ensure the MRI compatibility of various eyelid implants in high-field MRI, 3 eyelid weights made of pure gold (99.99%), pure platinum (99.95%), and a platinum (97%)/iridium (3%) alloy were examined in vitro. Temperature changes, position changes, and imaging artifacts of the different implants were determined in a small-bore 7.0 Tesla MRI system. The 7.0 Tesla MRI system demonstrated that none of the eyelid implants carried a risk of heating or dislocation; therefore, these implants are MRI compatible up to a magnetic field strength of 7.0 Tesla.

MeSH terms

  • Alloys
  • Artifacts
  • Eyelids / surgery*
  • Gold
  • Humans
  • In Vitro Techniques
  • Iridium*
  • Magnetic Resonance Imaging*
  • Magnetics*
  • Platinum*
  • Prostheses and Implants*
  • Temperature

Substances

  • Alloys
  • platinum-iridium alloy
  • Iridium
  • Platinum
  • Gold