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(a) 3-spoke k-space trajectory used for both the 90° and the 180° excitations. (b) The gradient waveforms (Gz and Gy) and RF waveform from one of the excitation coil (coil 1) for the VERSEd spin-echo sequence consisting of a 3-spoke 90° and 180° spin-echo excitations (TE = 20 ms). Also shown are the Gz crusher gradients surrounding the 180° spin-echo.
