Left atrial structure and functional quantitation using cardiovascular magnetic resonance and multimodality tissue tracking: validation and reproducibility assessment

Table 5 MTT test-retest reproducibility for CMR left atrium measurement (n = 22)

LA parameter	Difference (mean ± SD)	p	ICC	p	SEM	SDC
Vmax (ml)	−2.13 ± 11.52	0.20	0.80	<0.001	5.15	14.28
LAEF (%)	0.58 ± 8.31	0.42	0.54	0.005	5.76	15.95
LAPEF (%)	0.27 ± 6.22	0.99	0.48	0.01	4.49	12.44
LAAEF (%)	0.71 ± 7.77	0.24	0.57	0.002	5.09	14.12
Smax (%)	0.23 ± 7.09	0.84	0.60	0.001	4.49	12.43
SRmax (%/ms)	0.006 ± 0.29	0.72	0.48	0.01	0.21	0.59
SRe (%/ms)	−0.11 ± 0.34	0.16	0.63	<0.001	0.20	0.57
SRa (%/ms)	−0.02 ± 0.59	0.95	0.58	0.002	0.38	1.05

Results are reported as mean ± standard deviation
Abbreviations: Vmax left atrial maximal volume, LAEF left atrial total ejection fraction, LAPEF left atrial passive ejection fraction, LAAEF left atrial active ejection fraction, Smax maximum systolic strain, SRmax maximum systolic strain rate, SRe early-diastolic strain rate, SRa atrial diastolic strain rate, ICC intra-class correlation coefficient, SEM standard error of measurement, SDC smallest detectable change

ISSN: 1532-429X