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(B) To excite the spins, the transmit coil receives a signal from the controller/computer via a digital‐to‐analog converter (DAC). (A) The receive coil takes up the response from the excitation, amplifies, and digitizes (ADC) it. (C) The schematic of a transmit‐receive RF coil: the T/R‐switch controls the transmission and reception of RF signals.
