Table 3:

Accuracy of interpretation of the critical segmental artery

Variables	120-kV	70-kV	P Value
Accuracy in all subjects
Observer A	83.3	95.0	.035^{^a}
Observer B	83.3	93.3	.084
Accuracy in subjects with a collateral pathway
Observer A	61.5	100	.004^{^a}
Observer B	30.8	69.2	.047^{^a}