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Table 3 Coefficients of variation (CV) and repeatability coefficients (RC) for 60 plaques comparing the 5S- and 10S- methods

From: Reproducibility of 3-dimensional ultrasound readings of volume of carotid atherosclerotic plaque

PV (μL) N CV (%) RC (μl)
   5S method 10S method 5S vs. 10S
20 to < 40 30 4.3 (2.0) 3.8 (1.9) 3.9
40 to < 60 30 2.4 (1.1) 2.4 (0.9) 5.3
20 to < 60 60 3.4 (1.9) 3.1 (1.6) 4.7
  1. PV, plaque volume
  2. CV was calculated from 3 individual measurements, values are mean (standard deviation)
  3. RC was calculated for mean of 3 individual measurements comparing 5S and 10S