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. Author manuscript; available in PMC: 2015 Feb 1.
Published in final edited form as: Neuroimage. 2013 Oct 8;86:265–279. doi: 10.1016/j.neuroimage.2013.09.072

Figure 7.

Figure 7

Using COSMOS with multi-orientation datasets for multi-echo GRE and WASSR to calibrate the LSQR susceptibility calculation for single-orientation datasets. Susceptibility scale is in ppm relative to CSF. (a) The multi-orientation dataset was calculated with a convergence tolerance set at 1 × 10−5. (b) Single-orientation quantitative susceptibility maps for GRE and WASSR as a function of relative residual threshold (e.g., 0.30, 0.20, etc.) used as the LSQR iteration stopping criterion over a range from 0.30 to 0.04.