Fig. 1.

a-b Experimental setup of an 8-channel thermal MR applicator comprising an array of bow tie dipole antennas that support MR imaging, MRTh and targeted RF heating. c-d Experimental setup of a hybrid system using an external RF signal generator and RF amplifier at 500 MHz for RF heating, while MRI and MRTh is being performed at 7.0 T with a RF coil operated at 300 MHz. The power amplifier was calibrated to provide an output of 70 W at the end of the feeding cable. A power meter was used to monitor forward and reflected power during the RF heating experiments