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. 2015 May 4;42(5):2699–2708. doi: 10.1118/1.4914378

FIG. 6.

FIG. 6.

Reconstruction time for a full head volume (300 × 360 × 300 voxels) at fixed RMSD = 4 HU. (a) The time per iteration for each algorithm shows that Nesterov’s method only adds a negligible amount of computation and that the SP projectors are substantially faster. (b) Nesterov’s method reduces the number of iterations required to achieve the same RMSD = 4 HU by an order of magnitude over SQS. (c) The combined effect of Nesterov’s method and fast projectors yields a reconstruction time of ∼2 min for Nes-11-SP.