Skip to main content

Table 5 Inter-study reproducibility for qualitative perfusion parameters.

From: Reproducibility of adenosine stress cardiovascular magnetic resonance in multi-vessel symptomatic coronary artery disease

  All Subjects Control Case
Parameter Mean Difference* CoV Perfect Agreement Mean Difference* CoV Perfect Agreement Mean Difference* CoV Perfect Agreement
Number of ischemic segments
   Global -0.15 ± 0.88 30.6 90.7 -0.10 ± 0.57 75.7 96.2 -0.20 ± 1.14 24.7 85.3
   LAD -0.00 ± 0.65 72.1 89.3 -0.10 ± 0.74 210.8 95.2 -0.10 ± 0.57 39.2 83.3
   Circumflex -0.05 ± 0.60 78.0 90.3 -0.10 ± 0.32 210.8 96.2 0.00 ± 0.82 58.3 84.3
   RCA -0.07 ± 0.70 41.0 93.0 -0.10 ± 0.32 126.5 97.6 -0.25 ± 0.89 27.6 88.6
Transmural ischemia index
   Global -0.03 ± 0.10 8.1 90.7 -0.04 ± 0.11 9.7 96.2 -0.03 ± 0.09 7.1 85.3
   LAD -0.05 ± 0.29 22.8 89.3 0.00 ± 0.15 13.3 95.2 0.11 ± 0.38 26.7 83.3
   Circumflex -0.04 ± 0.21 17.6 90.3 -0.08 ± 0.18 16.5 96.2 0.01 ± 0.23 18.1 84.3
   RCA -0.04 ± 0.17 13.4 93.0 -0.02 ± 0.06 5.6 97.6 -0.07 ± 0.24 16.8 88.6
Hypoenhancement ischemia index
   Global -0.04 ± 0.13 9.4 81.1 -0.01 ± 0.06 5.4 94.2 -0.07 ± 0.17 11.1 67.9
   LAD 0.06 ± 0.39 28.5 78.9 0.06 ± 0.14 12.1 90.3 -0.04 ± 0.25 35.1 67.2
   Circumflex -0.05 ± 0.22 17.3 86.4 -0.07 ± 0.21 18.6 98.1 -0.08 ± 0.24 17.0 74.5
   RCA -0.11 ± 0.25 16.8 77.9 -0.07 ± 0.14 11.0 95.2 -0.06 ± 0.28 19.2 61.4
Infarct index
   Global -0.00 ± 0.06 4.7 96.0 0.00 ± 0.00 0.0 100.0 0.00 ± 0.08 6.1 94.2
   LAD 0.06 ± 0.39 4.2 95.4 0.00 ± 0.00 0.0 100.0 0.00 ± 0.07 5.5 96.7
   Circumflex -0.05 ± 0.22 6.4 97.1 0.00 ± 0.00 0.0 100.0 -0.03 ± 0.11 7.7 94.2
   RCA -0.11 ± 0.25 9.6 95.3 0.00 ± 0.00 0.0 100.0 0.04 ± 0.17 11.8 90.9
  1. Values are mean ± SD, CoV (%), perfect agreement (%). LAD = left anterior descending; RCA = right coronary artery.
  2. *Mean difference between first and second study.
  3. Percentage of segments with perfect agreement in ischemia grading between the two studies.
  4. CoV is a poor measure of reproducibility due to the average of measurements approximating zero.