Table 3.

ROC curve values

	ROC curve area	Cut-off	SE	SP	PPV	NPV
24 h
Renal artery	0.919	>1.0462	94.74	76.67	98.7	43.4
Interlobar artery, upper	0.965	>1.0317	94.74	88.33	92.0	98.1
Interlobar artery, mid	0.996	>1.0833	94.74	98.00	100.0	98.4
Interlobar artery, lower	0.982	>1.0877	99.54	93.33	82.6	99.2
Arcuate artery, upper	1.000	>1.1053	98.87	97.00	98.5	98.7
Arcuate artery, mid	1.000	>1.1167	99.23	99.00	100.0	99.8
Arcuate artery, lower	0.946	>1.0741	94.74	88.33	94.0	98.1
3 days
Renal artery	0.987	>1.0469	99.00	88.33	90.1	98.3
Interlobar artery, upper	0.984	>1.0625	94.74	96.67	90.0	98.3
Interlobar artery, mid	0.969	>1.0833	94.74	98.00	99.1	98.4
Interlobar artery, lower	0.993	>1.1034	100.00	96.67	90.5	98.2
Arcuate artery, upper	0.983	>1.1129	94.74	99.3	99.4	98.4
Arcuate artery, mid	0.995	>1.1167	100.00	96.67	90.5	97.4
Arcuate artery, lower	0.964	>1.07	94.74	88.33	72.0	98.1