摘要As a diagnostic method, magnetic resonance imaging (MRI) is not allowed to be used in
patients with medical implants, including both active implants (such as cardiac defibrillators or deep brain
stimulators) and passive implants (such as orthopedics implants and support). MRI imaging scanning
can produce magnetic fields, which will produce concentrated electromagnetic induction on metal edges
of the implants, such as electrodes. The magnetic field can also significantly increase the temperature
of surrounding tissues. Besides, the currents and voltage produced by active implants when exposed to
MRI scanning can lead to damage and malfunction of pulse generators. Therefore, patients with medical
implants cannot receive MRI as a diagnostic method. This safety protocol prevents a large group of
patients from receiving MRI diagnosis. This leads to the conclusion that the safety evaluation of implants
under MRI environment requires the combination of accurate data analysis and experimental techniques
so as to establish the standard testing program.
Eugenia CABOT1,
Maria CABANES-SEMPERE2,
Niels KUSTER1,3. On the Procedures for the Demonstration of the RF Safety of Active
and Passive Implants in MRI Environments[J]. 中国医疗设备, 2016, 31(4): 18-22.
. . China Medical Devices, 2016, 31(4): 18-22.
