Locally - sar - reduction, for example, for patients with metallic implants

摘要

The invention relates to a method, a mrt and a circuit (additionally; 109, 111, hy1, hy2, phi1 and phi2) for an image producing magnetic resonance tomography device (101), the (101) at least one transmission coil (108, 106) for transmitting a magnet - field (b1 (x, y, z, t)), characterised in that it (additionally; 109, 111, hy1, hy2, phi1 and phi2) in the transmission path between an amplifier (111; rfpa) and at least one transmitter or induction coil (108, 106) of the magnetic resonance tomography device (101), can be arranged or arranged in a hybrid - coupler (hy2) and at least one phase shifter (phi1 and phi2) comprises.