Journal
ANNUAL REVIEW OF CHEMICAL AND BIOMOLECULAR ENGINEERING, VOL 12, 2021
Volume 12, Issue -, Pages 163-185Publisher
ANNUAL REVIEWS
DOI: 10.1146/annurev-chembioeng-102720-015630
Keywords
nanomedicine; iron oxide; magnetic particle imaging; hyperthermia; theranostics
Categories
Funding
- National Science Foundation [DGE-1315138, DGE-1842473]
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Magnetic nanoparticles are of interest for biomedical applications due to their biocompatibility, tunable surface chemistry, and ability to be actuated by applied magnetic fields. They exhibit a dynamic response to time-varying magnetic fields, enabling their use as tracers in magnetic particle imaging and for conversion of magnetic energy to heat.
Magnetic nanoparticles are of interest for biomedical applications because of their biocompatibility, tunable surface chemistry, and actuation using applied magnetic fields. Magnetic nanoparticles respond to time-varying magnetic fields via physical particle rotation or internal dipole reorientation, which can result in signal generation or conversion of magnetic energy to heat. This dynamic magnetization response enables their use as tracers in magnetic particle imaging (MPI), an emerging biomedical imaging modality in which signal is quantitative of tracer mass and there is no tissue background signal or signal attenuation. Conversion of magnetic energy to heat motivates use in nanoscale thermal cancer therapy, magnetic actuation of drug release, and rapid rewarming of cryopreserved organs. This review introduces basic concepts of magnetic nanoparticle response to time-varying magnetic fields and presents recent advances in the field, with an emphasis on MPI and conversion of magnetic energy to heat.
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