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Table 3 Reproducibility metrics of normalized circumferential strain (NCS) from the analysis of six subjects by comparing results from the same reader processing the data at least six months apart (intra-observer) and by comparing results from two independent readers (inter-observer). [Abs. – absolute value, SD – standard deviation, CoV – coefficient of variation, Local Ext. – Local max/min extrema]

From: Assessment of the regional distribution of normalized circumferential strain in the thoracic and abdominal aorta using DENSE cardiovascular magnetic resonance

  Aortic Abs. Mean CoV Abs. Max/Min CoV Abs Max/Min
  Location Diff. (±SD) (Mean Diff.) Diff. (±SD) (Max/Min) Sector Diff.
  IAA 0.09 ± 0.06 0.11 0.07 ± 0.04 0.08 0.4
Intra- DTA 0.15 ± 0.13 0.20 0.11 ± 0.07 0.13 0.8
Observer DAA 0.21 ± 0.15 0.27 0.14 ± 0.17 0.20 0.3
  Mean 0.15 ± 0.11 0.19 0.10 ± 0.09 0.14 0.5
  IAA 0.12 ± 0.08 0.15 0.11 ± 0.09 0.15 0.6
Inter- DTA 0.13 ± 0.09 0.17 0.12 ± 0.09 0.15 0.3
Observer DAA 0.32 ± 0.21 0.39 0.31 ± 0.23 0.32 0.3
  Mean 0.19 ± 0.13 0.24 0.18 ± 0.13 0.21 0.4