Magnetically mediated thermoacoustic imaging and technical considerations on its coil design

Abstract

Magnetically mediated thermoacoustic imaging exploits the electromagnetic spectrum of radio frequency magnetic field under 20 MHz to perform thermoacoustic imaging, which can provide deeper penetration than microwave or light irradiation. To achieve effective imaging, current implementation relies on magnetic resonance of the coil to deliver sufficiently strong magnetic field into conductive objects, including tissues. Different kind of coils can be utilized, which affects both the magnetic field distribution and the design of the resonance circuits. We investigated here those various coils and their implications for the imaging system. Preliminary thermoacoustic signal generation and imaging results are also presented.