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. 2021 Dec 20;12:787083. doi: 10.3389/fphys.2021.787083

Figure 4.

Figure 4

The effect of increasing the spatial averaging window on the validity (A–C) and reproducibility coefficient of variation (D–F) for diameter, intima-media thickness, and distension, respectively. The dashed lines represent the reproducibility of the multiple M-line method (i.e., including all 17 M-lines). SD, standard deviation; IMT, intima-media thickness.