Figure 6
From: Advances in single-scan time-encoding magnetic resonance imaging
(a) Alternative hybrid time-encoding sequence in which the spin packets are re-phased in the detection sequence. (b) A decrease of the gradient switching rate can be achieved by replacing the spin-packet-selective gradient pulses in the Gte channel by a constant gradient. In both sequences, Gss, Gro, and Gte stand for slice-selection, readout, and time-encoding gradients, respectively. The crusher gradients remove artefacts from the images, the shift gradient reverses the detection order, leading to identical echo times TE for all echoes. The spin-packet re-phasing gradient un-winds the phase accumulated during spin-packet excitation.
