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Contrast ratios of the carotid plaques to adjacent muscle on MR plaque imaging and US
ImagingMain Plaque ComponentP Value (Kruskal-Wallis Test)
Fibrous Tissue (n = 8)Lipid/Necrosis (n = 12)Hemorrhage (n = 10)
MR
    T1WI0.54–1.17 (0.97)a1.16–1.53 (1.27)a1.40–2.29 (1.99)a<.001
    PDWI0.84–1.52 (1.33)0.86–1.82 (1.43)1.08–1.82 (1.53).070
    T2WI1.51–3.79 (1.89)2.34–5.10 (2.88)b1.47–3.10 (1.89).041
US
    GSM4–18 (7.5)1–25 (13)1–29 (16).26
  • Note:—GSM indicates gray-scale median.
  • ↵a P < .001.
  • ↵b P < .05, Mann-Whitney U test; data are presented as range (median).