Functional measurements based on feature tracking of cine magnetic resonance images identify left ventricular segments with myocardial scar

Table 3 Areas under the receiver operating characteristic (ROC) curves (AUC) shown in Figure 3.

	Composite	Radial strain	Radial displacement	Radial velocity	Longitudinal strain	Longitudinal velocity	Longitudinal displacement
ROC area	0.905	0.892	0.879	0.855	0.764	0.588	0.535
95% conf. int.	0.877-0.929	0.863-0.917	0.848-0.906	0.822-0.883	0.726-0.799	0.545-0.630	0.491-0.578
Cut off value*	2.52	38.8	3.97	1.82	-18.5	2.49	4.99
Sens/Spec	78/93	80/86	85/78	86/75	47/95	44/75	34/80
Cut off value*	>2.4	>38.9	>4.47	>2.1	<-9.6	>1.1	>1.29
Sens at Spec = 80%	90	86	80	78	48	31	19

* Chosen cut off value corresponding to sensitivity and specificity in the row below.
The parameters are ranked after AUC. Sensitivities (sens) and specificities (spec) are in %. Significance of differences between ROC areas and sensitivities at 80% specificity are shown in Table 4.

ISSN: 1476-7120