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Table 3: The predictability of FHVs for large-artery stenosis on T2-FLAIR and T2-PROPELLER-FLAIRa
T2-FLAIR T2-PROPELLER-FLAIR P Value Arterial stenosis or occlusion on MRA 28/35 (80%) Incidence of FHV 19/35 (54%) 26/35 (74%) .06 Predictabilityb     True-positive 19 26     True-negative 7 7     False-positive 0 0     False-negative 9 2     Sensitivity 68% 93% .03     Specificity 100% 100%