An In-Vivo Experimental Study of Temperature Elevations in Animal Tissue During Magnetic Nanoparticle Hyperthermia

Magnetic nanoparticle hyperthermia has potential to achieve optimal therapeutic results due to its ability to deliver adequate heating power to irregular and/or deep-seated tumor at low magnetic field frequency and amplitude [1]. Iron oxides magnetite Fe₃O₄ and maghemite γ-Fe₂O₃ nanoparticles are the most studied to date [2] due to their biocompatibilty [3] for hyperthermia application. The heat generated by the particles when exposed to an external alternating magnetic field is mainly due to the Néel relaxation mechanism and/or Brownian motion of the particles [4]. The superparamagnetic particles (10–40 nm) are recommended in clinical application as they are able to generate substantial heat within a small magnetic field strength and frequency [5].