Magnetic resonance imaging quantification of left ventricular mechanical dispersion and scar heterogeneity optimize risk stratification after myocardial infarction

Table 2 Intra- and interobserver reproducibility statistics for entropy and LVMD measurements

	Intraobserver reproducibility (Observer 1)			Intraobserver reproducibility (Observer 2)			Interobserver reproducibility
	ICC	95% Limits of agreement	p-value	ICC	95% Limits of agreement	p-value	ICC	95% Limits of agreement	p-value
BZ entropy	0.920	(0.893,0.940)	<0.001^*	0.913	(0.884,0.935)	<0.001^*	0.884	(0.842,0.915)	<0.001^*
IC entropy	0.931	(0.907,0.949)	<0.001^*	0.927	(0.903,0.946)	<0.001^*	0.892	(0.855,0.919)	<0.001^*
IBZ entropy	0.955	(0.939,0.966)	<0.001^*	0.956	(0.941,0.968)	<0.001^*	0.917	(0.890,0.939)	<0.001^*
LV entropy	0.964	(0.952,0.974)	<0.001^*	0.973	(0.964,0.980)	<0.001^*	0.956	(0.939,0.967)	<0.001^*
LVMD	0.984	(0.978,0.988)	<0.001^*	0.982	(0.975,0.987)	<0.001^*	0.955	(0.937,0.967)	<0.001^*

^*p < 0.05 is accepted as statistically significant. Observer 1: XY.Z. Observer 2: L.Z
LVEF, left ventricular ejection fraction; BZ, border zone; IC, infarct zone; IBZ, infarct zone and border zone; GRS, global radial strain; GCS, global circumferential strain; GLS, global longitudinal strain; LVMD, left ventricular mechanical dispersion

ISSN: 1471-2261