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Table 2: Spatial accuracy assessment of the virtual 3D roadmap for the 9 ROIs
ROIs of the Virtual Roadmap/Spatial Accuracy No. (%)
Brachiocephalic artery trunk 
 Accurate 27 (96.4)
 Mismatch 1 (3.6)
 Inaccurate 
 All 28 (100)
Right subclavian artery 
 Accurate 8 (100)
 Mismatch 
 Inaccurate 
 All 8 (100)
Right vertebral artery 
 Accurate 5 (100)
 Mismatch 
 Inaccurate 
 All 5 (100)
Right common carotid artery 
 Accurate 16 (69.6)
 Mismatch 3 (13.0)
 Inaccurate 4 (17.4)
 All 23 (100)
Right internal carotid artery 
 Accurate 10 (66.7)
 Mismatch 3 (20.0)
 Inaccurate 2 (13.3)
 All 15 (100)
Left common carotid artery 
 Accurate 24 (85.7)
 Mismatch 3 (10.7)
 Inaccurate 1 (3.6)
 All 28 (100)
Left internal carotid artery 
 Accurate 17 (81.0)
 Mismatch 3 (14.3)
 Inaccurate 1 (4.8)
 All 21 (100)
Left subclavian artery 
 Accurate 13 (92.9)
 Mismatch 1 (7.1)
 Inaccurate 
 All 14 (100)
Left vertebral artery 
 Accurate 8 (88.9)
 Mismatch 1 (11.1)
 Inaccurate 
 All 9 (100)
Overall 
 Accurate 128 (84.8)
 Mismatch 15 (9.9)
 Inaccurate 8 (5.3)
 All