Akademik Veri Yönetim Sistemi
European Biotechnology Congress, Dubrovnik, Hırvatistan, 25 - 27 Mayıs 2017, cilt.256, ss.43
Depending on the type of material used, implants may interact
with the magnetic fields which are used in a Magnetic Resonance
Imaging (MRI) device. The interaction between ferromagnetic or
electrically conductive featured materials and static magnetic field
or radiofrequency (RF) pulses may risk the life of the patient with
the implant. Materials which do not interact with the magnetic
fields must be used in implant production in order to prevent such
circumstances. To distinguish MRI safe and incompatible materials, standards and test procedures which have been developed by
international organizations are available. However, applying these
tests to the implants separately is impractical in terms of time
and cost. Therefore, performing such tests in a computer environment provides plenty of advantages in terms of time, material and
workforce. In this respect, a computer simulation of the interaction
between a medical implant and the MRI environment is created
using Sim4Life Multiphysics Simulation Software. The Electromagnetic Finite Difference Time Domain (EM-FDTD) Method and the
Thermal Analysis Method are combined in the simulation for this
purpose. The designed simulation analyses the physical effects of
MRI fields with regard to electrical current induction based overheating, on and near the material which is implanted in the human
body. In the simulation, it is observed thatmaximum heating during
an MRI procedure is at the end point of the implanted conductive
wire.