Table 4:

Area under ROC curve (univariate analysis)

Phase	AUC	95% LCL	95% UCL	Optimal Cutoff (HU)	Sensitivity	Specificity
Precontrast	0.983	0.954	1	62	0.966	0.983
Arterial	0.979	0.955	1	129	0.828	1
Venous	0.965	0.933	0.997	120.6	0.897	0.931
Delayed	0.957	0.916	0.998	125	0.966	0.879

Note:—AUC indicates area under the curve; HU, Hounsfield unit; LCL, lower control limit; UCL, upper control limit.