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TABLE 1: 
Sensitivity and specificity of contrast-enhanced MR angiography for the evaluation of disease in the carotid and vertebrobasilar circulations
Observer 1Observer 2
Sensitivity (%)Specificity (%)Sensitivity (%)Specificity (%)
Stenosis only
    ICA889710099
    VB8699100100
    ICA + VB8799100100
Occlusion only
    ICA100100100100
    VB83997999
    ICA + VB86998299
Stenosis and occlusion
    ICA929710099
    VB86988799
    ICA + VB88989199
All disease
    ICA949710097
    VB88988899
    ICA + VB90979298
  • Note.—ICA indicates internal carotid artery; VB, vertebrobasilar circulation.