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. Author manuscript; available in PMC: 2019 Jun 5.
Published in final edited form as: SIAM J Imaging Sci. 2018 Jun 5;11(2):1560–1588. doi: 10.1137/17M1153649

Table 3:

Values of different metrics that could be employed for selecting a constant sound speed value. The optimal value according to each metric is shown in bold.

Metric 1.485 1.49 1.495 1.50 1.505 1.51
Sharpness ×103 2.55 3.65 4.00 3.04 2.65 2.60
Cost 58.9 32.7 22.2 33.0 55.7 78.3
RMSE ×10−2 7.42 7.34 7.17 6.83 7.15 8.19