TABLE 3:

Interobserver agreement with MR angiography for the detection of collateral pathways (n = 150)^*

Findings, Observer 1†	Findings, Observer 2†		Total
	Yes	No
Yes	101	9	110
No	15	25	40
Total	116	34	150

^*κ = 0.57 (95% confidence interval: 0.42, 0.72).

^†Yes indicates functional. No indicates nonfunctional.