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Table 2: 
Performance of HR-VWI versus DSA in assessing tandem occlusion and suitability for recanalization of ICAa
DSAHR-VWI
PresentAbsentSuitableUnsuitable
HR-VWI present18 (40.0%)0 (0.0%)4 (8.9%)14 (31.1%)
HR-VWI absent16 (35.6%)11 (24.4%)27 (60.0%)0 (0.0%)
DSA (suitability for recanalization)
 Suitable9 (20.0%)11 (24.4%)20 (44.4%)0 (0.0%)
 Unsuitable25 (55.6%)0 (0.0%)11 (24.4%)14 (31.1%)
  • ↵a “Present” means tandem occlusion–positive; “Absent” means tandem occlusion–negative. The table shows the proportional relationship between the presence of tandem occlusion and the suitablity for recanalization. The percentage was calculated on the basis of a total number of patients of 45.