Effect of 7.0 Tesla MRI on upper eyelid implants.
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.
Schrom
Thomas
T
Department of Otorhinolaryngology, Charité-Universitaetsmedizin Berlin, Charité Campus Mitte, Berlin, Germany. thomas.schrom@gmx.de
Thelen
Ariane
A
Asbach
Patrick
P
Bauknecht
Hans-Christian
HC
D000497:Alloys; D016477:Artifacts; D005143:Eyelids / Q000601:surgery*; D006046:Gold; D006801:Humans; D066298:In Vitro Techniques; D007495:Iridium; D008279:Magnetic Resonance Imaging; D008280:Magnetics; D010984:Platinum; D019736:Prostheses and Implants; D013696:Temperature
D000497:Alloys; C077763:platinum-iridium alloy; D007495:Iridium; D010984:Platinum; D006046:Gold