Contrast ratios of the carotid plaques to adjacent muscle on MR plaque imaging and US

Imaging	Main Plaque Component			P Value (Kruskal-Wallis Test)
Imaging	Fibrous Tissue (n = 8)	Lipid/Necrosis (n = 12)	Hemorrhage (n = 10)	P Value (Kruskal-Wallis Test)
MR
T1WI	0.54–1.17 (0.97)^{^a}	1.16–1.53 (1.27)^{^a}	1.40–2.29 (1.99)^{^a}	<.001
PDWI	0.84–1.52 (1.33)	0.86–1.82 (1.43)	1.08–1.82 (1.53)	.070
T2WI	1.51–3.79 (1.89)	2.34–5.10 (2.88)^{^b}	1.47–3.10 (1.89)	.041
US
GSM	4–18 (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).