A radial GRE-sequence was modified using Pulseq to reduce the acoustic noise amount produced by the rapid switching of gradient currents without excessively increasing the TR-time. Prospective motion-correction was performed using a markerless tracking device that sent the motion estimates to the scanner via the libXPACE framework, incorporated directly into Pulseq, to update gradients and RF pulses during the MR scan. The quieter sequence resulted in a acoustic noise reduction of 6 dB(A) (i.e. a factor of 2) compared to the standard one. Image quality was greatly improved using prospective motion-correction in the case of deliberate motion during the scan.
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