Table 1

Calcium ring analysis

AccuracyInter-measurement
Outer ringInner ringOuter ringInner ring
Diameters
 Intraclass correlation coefficient
  3DE0.900.900.920.92
  MSCT0.970.980.980.97
  CMR0.970.990.950.98
 Bias (lower, upper 95% limits of agreement), cm
  3DE0.69 (−2.63, 4.00)−1.01 (−3.93, 1.92)
  MSCT0.06 (−1.86, 1.97)0.36 (−1.08, 1.79)
  CMR−0.11 (−1.93, 1.70)0.18 (−0.94, 1.30)
Area
 Intraclass correlation coefficient
  3DE0.920.97
  MSCT0.990.97
  CMR0.990.99
 Bias (lower, upper 95% limits of agreement), cm2
  3DE0.07 (−0.95, 1.09)−0.09 (−0.35, 0.17)
  MSCT−0.05 (−0.32, 0.23)0.09 (−0.18, 0.36)
  CMR0.04 (−0.32, 0.25)0.09 (−0.06, 0.25)
  • 3DE, three-dimensional echocardiography; CMR, cardiac magnetic resonance; MSCT, multi-slice CT.