Detection of the presence of dural AVF by MR imaging alone and by MR imaging plus MR angiography

	Sensitivity(%)		Specificity (%)		Accuracy (%)
	MRI	MRI + MRA	MRI	MRI + MRA	MRI	MRI + MRA
R1	85	85	91	82	87	84
R2	90	100	82	82	87	94
R3	85	80	100	82	90	81

Note.—MMRI indicates MR imaging only; MRI + MRA, MR imaging plus MR angiography; R, reviewer.