Theoretical And Experimental Study On Magnetic Fluid Hyperthermia

Cancer is one of the major diseases, which are harmful to human healthy,and the hyperthermia is an effective way to cure it. As a new nanometer functionalmaterials, magnetic fluid, which consists of three parts: the magnetic nanoparticles,surfactants and carrier fluid, will be heated due to the alternating magnetic field. Basedon these characteristics, Magnetic Fluid Hyperthermia(MFH) has become a researchhotspot.In this paper, the application of MFH and some related research are discussed.(1) The development history of MFH is introduced and the key problems of the treatment process are discussed. And the research survey of magnetic fluid biological consistency is also introduced .(2) Based on the magnetization theory of ferromagnetic materials, dynamic magnetization process of ferrofluid subjected to the alternating magnetic field is studied. And the reasons resulting in the temperature increasing and the factors affecting the calorific value are analyzed from the microscopic view.(3) Based on a formula about a DC solenoid, the magnetic field distribution of the infinitely length solenoid subjected to AC is studied. And based on the first law of thermodynamics, introducing complex magnetic permeability and consulting some related references, the power dissipation formula of the magnetic fluid subjected to the alternating magnetic field is obtained.(4) The magnetic field distribution of the solenoid is simulated by ANSYS and is compared with the theoretical formula. Then the reasons resulting in the difference between simulation and theory are analyzed. And the power dissipation formula is verified by experiment.