Table 4.

Optimal cut-off values and diagnostic performance of strain and wall thickening for detecting hyperenhancement and detecting microvascular injury within hyperenhanced segments

Characteristic	Hyperenhancement						MVO
	Optimal cut-off	Sensitivity (%)	Specificity (%)	PPV (%)	NPV (%)	Accuracy (%)	Optimal cut-off	Sensitivity (%)	Specificity (%)	PPV (%)	NPV (%)	Accuracy (%)
Wall thickening
absWT	2.7 mm	72	79	68	82	76	2.1 mm	75	61	51	82	65
relWT	48 %	81	70	63	86	74	31 %	79	60	51	84	66
Circumferential strain
CS	-9.6 %	81	76	68	87	78	-6.2 %	75	74	60	85	74
Systolic CSR	-5.9 %/ms	72	78	67	82	76	-4.7 %/ms	71	68	54	82	69
Diastolic CSR	5.5 %/ms	68	84	72	81	77	3.5 %/ms	61	77	58	79	71
Radial strain
RS	8.1 %	68	80	67	80	75	5.7 %	68	74	58	81	72
Systolic RSR	5.8 %/ms	64	74	61	77	70	5.0 %/ms	70	65	51	80	66
Diastolic RSR	-6.8 %/ms	63	76	62	77	71	-4.7 %/ms	50	82	59	75	70

PPV = positive predictive value; NPV = negative predictive value; other abbreviations as in Table 2 and 3