A Vector Modulation Transmit Array System
Scott G, Overall W, Pauly J, Stang P, Kerr A
Transmit coil arrays have gained interest as a means of shortening selective excitation. However, a more urgent need exists in interventional MRI, where RF safety with guidewire coupling remains a major concern. We propose a transmit array system with the goal of creating safe RF excitations in the presence of guidewires. We are prototyping vector modulator electronics, low cost RF power amplifiers, and a 3 coil array to test feasibility of our approach.