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. 2007 Jan-Mar;32(1):34–42. doi: 10.4103/0971-6203.31148

Figure 3.

Figure 3

Nuclei diffusing in the presence of a balanced gradient pair G and −G. The two gradients are separated by a diffusion time interval τ and are very short (δ ≪ τ). Relaxation effects are omitted for simplicity. A diffusion gradient changes the phase of a spin depending on its position along the x-axis. S0 is the signal obtained without any diffusion gradients, S is the signal attenuated due to phase dispersion caused by the diffusion gradient pair and ø is the phase.