Direct Method for Parallel Transmit Pulse Design by Time-Reversal of the Small-Tip Angle Excitation

Keywords

ability according achieved acquisition although amplitude apply aqueous array assuming ball channels circumstances claimed coinciding column columns complex computation confined consequence consider covering depicted depicts derivation described describes design designed desired determinant dictated disjoint displayed distortions dotted easily edge element employed entirely equation equations example excitation excitations exists experiment experimentally extremely features field fold formulation frequency generally generated green homogeneity homogeneous hypothetical identical identically inserting inside instead intuitive inversion invert inverted link mall many maps matrix mental middle mitigation needed neglecting never object parallel pattern patterns phantom physical population principle problem process profile profiles proof proposed published pulse pulses radial radius receiver reciprocity rectangular reformulate relationship requires reverse sampling scanner scanning selective sensitivities sensitivity setup shah shape sharp shim shimmed sign simulated simulation slew smoothly solution sought space spherical spin spiral square static strengths target targets thereby trajectory transform transition transmit trio valid variable vary varying versus view ween wool yields