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. Author manuscript; available in PMC: 2016 Mar 1.
Published in final edited form as: Magn Reson Med. 2014 Mar 17;73(3):1034–1040. doi: 10.1002/mrm.25222

Figure 2.

Figure 2

Computational scaling with respect to image size for non-iterative inverse methods. The time for a single inverse evaluation is shown for the optimized sparse Cholesky decomposition CHOLMOD and the HSS solver using a 10−6 tolerance. The matrix is associated with a R = 3 acceleration and 32 channels. The images range in size from 112 × 112 to 448 × 448.