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Table 2 Characteristics of intracranial and extracranial plaques on MR images

From: Co-existing intracranial and extracranial carotid artery atherosclerotic plaques and recurrent stroke risk: a three-dimensional multicontrast cardiovascular magnetic resonance study

  Mean ± SD or N (%) Range
Intracranial artery
 Maximum wall thickness, mm 2.3 ± 0.7 1.1–3.5
 Length, mm 8.6 ± 3.6 2.9–18.5
 Stenosis, % 27.6 ± 13.9 2.2–68.3
 Presence of calcification 17 (17.9)  
 Presence of lipid-rich necrotic core 43 (45.3)  
 Presence of intraplaque hemorrhage 15 (15.8)  
Extracranial carotid artery
 Maximum wall thickness, mm 3.6 ± 1.1 2.2–8.0
 Length, mm 13.2 ± 6.1 4.5–31.8
 Stenosis, % 19.4 ± 17.3 0–100
 Presence of calcification 30 (26.3)  
 Presence of lipid-rich necrotic core 80 (70.2)  
 Presence of intraplaque hemorrhage 18 (15.8)