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. Author manuscript; available in PMC: 2016 Jun 1.
Published in final edited form as: Magn Reson Med. 2014 Jul 17;73(6):2212–2224. doi: 10.1002/mrm.25364

Figure 3.

Figure 3

Sample TPSFs for are shown for an arbitrary point at coordinates (7, 29) in the wavelet domain at reduction factor R=8. The spatially-varying nature of the acquisition is examined in the following figure. The TPSF with highest peak and low noise-like background denotes greatest incoherence and suitability for a sparsity-promoting reconstruction. The inset figure in panel B is the acquired k-space for the Cartesian compressed sensing, namely Poisson disk sampling of phase encoding steps. O-space imaging shows interference patterns that spread more evenly across length scales and orientations. As a result the scale of the incoherence is reduced. O-space with pseudo-random CPs (D) has the greatest incoherence of the methods shown.