PTx Quadrature Heating

Temperature probe measurements for heating at tip of wire 12 cm long copper wire in a polyacrylic acid cylindrical phantom (radius = 9 cm, height = 24 cm) using FRFSE sequence (TR = 559 ms, TE = 100 ms, echo train length = 24, 1 slice, imaging time = 4:08). Excitation with 4-element parallel transmit coil with phase shifts of 0, 90, 180 and 270 degrees between elements with transmit gain of 195