Table 4:

Diagnostic performances of duplex parameters for dural arteriovenous fistula

	Cutoff	Sensitivity	Specificity	PPV	NPV	Accuracy
OA
RI	0.76	0.96	0.97	0.92	0.98	0.96
PSV	92	0.67	0.88	0.70	0.87	0.82
EDV	14	0.96	0.95	0.88	0.98	0.95
ECA
RI	0.75	0.88	0.87	0.72	0.95	0.87
PSV	103	0.58	0.58	0.36	0.78	0.58
EDV	18	0.96	0.67	0.53	0.98	0.75
CCA
RI	0.59	0.29	0.98	0.88	0.78	0.79
PSV	107	0.25	0.87	0.43	0.74	0.69
EDV	33	0.50	0.95	0.80	0.83	0.82

Note:—EDV indicates end diastolic velocity (centimeters/second); NPV, negative predictive value; PPV, positive predictive value; PSV, peak systolic velocity (cm/s); RI, resistance index.