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. 2017 Jan 9;12(1):e0169385. doi: 10.1371/journal.pone.0169385

Fig 6. Comparison of quantitative measures among reference and averaged images in the superior region (for other regions, please see S1 Fig).

Fig 6

Improvements in SNR (A) remain significant up to 6 frames averaged. Decreases in the number of skeleton endpoints (B) remain significant up to 4 frames averaged. Increases in the mean length of skeleton segments (C) remain significant up to 7 frames averaged. Increases in vessel density (D) remain significant up to 2 frames averaged. ICD (E) does not change significantly among frames.