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. Author manuscript; available in PMC: 2018 Sep 1.
Published in final edited form as: Magn Reson Med. 2016 Oct 21;78(3):1093–1099. doi: 10.1002/mrm.26499

Figure 3.

Figure 3

(A) the joint optimization can be efficiently solved through the use of a fast greedy search. A line search is performed for each of the variables used to describe the gradient trajectory. The objective function corresponds to the data consistency RMSE based upon the SENSE solution, across the small number of test locations. Multiple passes are performed until the method converges to a local minimum. (B) the sensitivity of RMSE to changes in the trajectory variables is illustrated. Here, the percentage change is shown relative to the theoretical gradient amplitude (see Figure 2). Smooth variation in the objective along with clear local minima can be observed.