Figure 1.

Schematic overview of the NC and FC DDE sequences. RF shows the excitation and refocusing pulses, S displays the acquired spin echo, G^*(t) is the magnetic field gradient waveform of the sequence, q(t) is the dephasing factor (Equation (3)), Q(t) corresponds to the negative integral of q from zero to t, where Q(t_E) = α (Equation (5)), and Q₂(t) is the integral of q ² from zero to t, where Q₂(t_E) = b (Equation (2)). Solid lines correspond to the NC acquisition, and dashed lines to the FC acquisition (i.e., α = 0). Note the resemblance of the FC and NC acquisitions, resulting in identical timings and diffusion weightings b, but different flow weightings α_NC/FC.