Figure 2.

k-Space sampling strategy demonstrating the interleaved radial acquisition. Only the endpoint of each view (spoke) is shown here. Undersampling is implemented by dividing the fully sampled k-space volume into V_t interleaved acquisitions, where V_{t − 2} (blue) is the rotated version of V_{t − 1} (green), which in turn is the rotated version of V_t (red). Each interleave provides a quasi-uniform sampling of the surface of the sphere.