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. 2019 Sep 11;9:13095. doi: 10.1038/s41598-019-49311-w

Figure 3.

Figure 3

Equivalence testing for the determination of the minimum NSA for bias-free FA evaluation is shown for ROI-based analysis at 1.5 T Philips (A), 3 T Philips (B), 3 T Siemens (C) and 3 T GE (D) MRI systems (Equivalence tolerance range = [−0.05, 0.05]). FA, fractional anisotropy; NSA, number of signal average.