High-field actively detuneable transverse electromagnetic (TEM) coil with low-bias voltage for high-power RF transmission.

Abstract

The design and construction of a 4T (170 MHz) transverse electromagnetic (TEM) actively detuneable quadrature head coil is described. Conventional schemes for active detuning require high negative bias voltages (>300 V) to prevent leakage of RF pulses with amplitudes of 1-2 kW. To extend the power handling capacity and avoid the use of high DC bias voltages… (More)

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