Magnetic power loss of NdFeB thermoseeds in alternating magnetic field for magnetic induction hyperthermia
In this article,the magnetic power loss of NdFeB magnetic material was calculated by combining experiment and simulation.The results showed that the magnetic power loss of NdFeB thermoseed in the magnetic field with frequency of 21～29 kHz and magnetic induction intensity of 2.7～3.7 mT was higher,and the thermal volumetric power density was in the range of 2.39×106 W/m3～5.54×106 W/m3 under the given magnetic field condition.The results were applied to the simulation of magnetic induction hyperthermia.The simulation results showed that the effective hyperthermia boundary of a single NdFeb thermoseed was ellipsoidal,with the short half-axis of 12.9 mm of and the long half-axis of 17.6 mm for the maximum effective hyperthermia range under the given magnetic field condition,indicating that NdFeB thermoseed could reach the heat generation power required for hyperthermia under low magnetic field frequency and magnetic induction intensity,which provided data support for the application of NdFeB material in magnetic hyperthermia.
magnetic induction hyperthermiaNdFeB materialthermoseednumerical simulation
NETL
NSTL
万方数据
