Alternative RF antenna designs for high-field magnetic resonance imaging

Summary form only given, as follows. RF probes in MRI are traditionally designed as ‘coils’ i.e. near-field antennas. However, at 7 Tesla (300 MHz) the frequency is high enough that for deeply located structures the antennas should be designed as radiative antennas. One innovative example of such an antenna design is the single-side adapted dipole antenna. We will show that an array of these antennas is able to deliver a higher signal while depositing a lower level of SAR than conventional antenna arrays.