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. 2017 Jul 7;79(3):1817–1828. doi: 10.1002/mrm.26814

Figure 2.

Figure 2

MRI pulse sequence for axisymmetric diffusion encoding 41, 53. a: Spin‐echo sequence with EPI image readout 67, 68 and a pair of modulated gradient waveforms with duration τ (red, green, and blue lines) encoding the signal for translational motion. The 90° and 180° radiofrequency pulses generate a spin echo at the echo time TE. b: Four examples of gradient waveforms G(t) calculated with Equations [2] to [6] for the angles ζ = 0°, 20.5°, 32.1°, and 54.7°. All examples have the same b‐value, whereas the b‐tensor anisotropy b Δ is given by the value of ζ through Equation [7]. The global maximum gradient amplitude for the set of waveforms is G max.