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Table 5 Comparison of indirect and direct methods by laterality of AVVR

From: Direct measurement of atrioventricular valve regurgitant jets using 4D flow cardiovascular magnetic resonance is accurate and reliable for children with congenital heart disease: a retrospective cohort study

 Mitral regurgitationTricuspid regurgitation
 SpearmanWSRTMedian Difference
(IQR)		SpearmanWSRTMedian Difference
(IQR)
VOL vs. AIMstatρ = 0.79p = 0.2313.1% (− 2.0–6.0)ρ = 0.58p = 0.0788.1% (−2.7–19.0)
VOL vs. AIMtrackρ = 0.76p = 0.0785.5% (− 0.6–10.6)ρ = 0.61p = 0.036*11.1% (− 0.7–20.0)
VOL vs. JETρ = 0.66p = 0.349−7.0% (− 10.1–7.3)ρ = 0.66p = 0.869−0.4% (− 7.1–8.2)
AIMstat vs. AIMtrackρ = 0.98p = 0.001*2.4% (1.1–4.8)ρ = 0.98p = 0.004*1.6% (−0.3–3.8)
AIMstat vs. JETρ = 0.66p = 0.157−1.3% (− 14.5–4.2)ρ = 0.85p = 0.014*−4.5% (− 11.5–1.4)
AIMtrack vs. JETρ = 0.69p = 0.018*−4.3% (− 15.0–1.1)ρ = 0.85p = 0.001*−6.4% (− 13.8 – − 1.2)
 ICCPaired T-TestMean Difference
(± SD)		ICCPaired T-TestMean Difference
(± SD)
Intra-observer reliability
 VOL0.996p = 0.844−0.12% ± 1.640.962p = 0.9950.01% ± 7.01
 AIMstat0.918p = 0.3971.71% ± 5.370.989p = 0.472−0.89% ± 4.23
 AIMtrack0.931p = 0.6520.96% ± 5.760.990p = 0.467−0.93% ± 4.27
 JET0.935p = 0.5911.42% ± 7.180.995p = 0.074−1.10% ± 1.92
Inter-observer reliability
 VOL0.909p = 0.133−3.60% ± 5.980.981p = 0.232−1.62% ± 4.42
 AIMstat0.902p = 0.7510.76% ± 6.510.959p = 0.2692.64% ± 7.85
 AIMtrack0.973p = 0.586−0.70% ± 3.450.957p = 0.3532.44% ± 8.70
 JET0.928p = 0.6441.25% ± 7.350.954p = 0.2382.36% ± 6.54
  1. An asterisk (*) denotes statistical significance defined as p < 0.05. VOL Volumetry method, AIMstat Annular inflow method by static plane, AIMtrack Annular inflow method by valve-tracking plane, JET Direct measurement of the atrioventricular regurgitant jet, ICC Intra-class correlation, SD Standard deviation, IQR Interquartile range, WSRT Wilcoxon signed rank test
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Journal of Cardiovascular Magnetic Resonance

ISSN: 1532-429X

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