Table 5.

Diagnostic accuracy of TTE, TTP and wash-in rate. Ninety-five per cent confidence intervals are reported

Parameter	Cut-off value	AUC	Sensitivity	Specificity	PPV	NPV
TTE	≤4	0.781 (0.612 to 0.901)	45.75 (19.8 to 70.1)	95 (75.1 to 99.9)	87.5 (47.3 to 99.7)	67.9 (47.1 to 99.7)
TTP	≤15	0.758 (0.586 to 0.885)	75 (46.7 to 92.7)	75 (47.6 to 92.7)	70.6 (44 to 89.7)	78.9 (54.4 to 93.9)
Wash-in	≤4	0.781 (0.612 to 0.901)	93.8 (68.8 to 99.8)	50 (27.2 to 72.8)	60 (38.7 to 68.9)	90.9 (58.7 to 99.8)

AUC, area under the curve; NPV, negative predictive value; PPV, positive predictive value; TTE, time from injection to enhancement; TTP, time to peak.