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Table 2 Inter-study reproducibility

From: Quantification of atrial dynamics using cardiovascular magnetic resonance: inter-study reproducibility

  

Left atrium

Right atrium

  

Mean difference ± 2 SD

CoV (%)

ICC (95 % CI)

Mean difference ± 2 SD

CoV (%)

ICC (95 % CI)

Atrial function

Volumetric index (%)

      

Reservoir; global

EF Total

1.5 ± 5.8

4.5

0.94 (0.81-0.98)

0.5 ± 8.0

7.5

0.96 (0.87-0.98)

Conduit

EF Passive

0.6 ± 11.3

12.6

0.84 (0.54-0.94)

1.9 ± 9.0

13.9

0.91 (0.75-0.97)

Booster pump

EF Booster

0.8 ± 8.5

21.6

0.71 (0.19-0.90)

1.4 ± 8.2

19.4

0.73 (0.26-0.90)

 

Strain (%)

      

Reservoir

εs

0.3 ± 3.5

5.7

0.97 (0.92-0.99)

0.5 ± 11.1

16.6

0.89 (0.68-0.96)

Conduit

εe

0.5 ± 3.9

8.2

0.97 (0.90-0.99)

0.6 ± 9.1

20.7

0.84 (0.53-0.94)

Booster pump

εa

0.2 ± 2.7

18.3

0.95 (0.85-0.98)

0.1 ± 5.6

24.3

0.89 (0.68-0.96)

 

Strain Rate (s −1 )

      

Reservoir

SRs

0.0 ± 0.2

8.2

0.96 (0.87-0.99)

0.0 ± 0.6

24.0

0.76 (0.29-0.92)

Conduit

SRe

0.2 ± 0.5

18.5

0.78 (0.36-0.93)

0.1 ± 0.6

35.9

0.67 (0.05-0.89)

Booster pump

SRa

0.0 ± 0.4

22.7

0.91 (0.75-0.97)

0.1 ± 0.7

32.2

0.90 (0.73-0.97)

 

Atrial volume (ml)

      
 

Maximum

1.0 ± 8.8

6.8

0.98 (0.94-0.99)

0.9 ± 19.5

12.4

0.96 (0.88-0.99)

 

Minimum

1.2 ± 4.6

10.0

0.98 (0.92-0.99)

0.8 ± 10.1

13.7

0.97 (0.93-0.99)

 

Prior to atrial contraction

0.8 ± 7.3

10.3

0.97 (0.92-0.99)

1.9 ± 14.2

13.2

0.97 (0.91-0.99)

  1. Inter-study reproducibility for left and right atrial functional parameters and volumes as determined by Bland-Altman analysis (mean difference ± 2SD), coefficients of variation (CoV) and intra-class correlation coefficients (ICC).
  2. SD, standard deviation; CoV, coefficient of variation; ICC, intraclass correlation coefficient; CI, confidence interval.