Muti-contrast MR images of fibrotic plaque correlated with histology. A, T1W image. B, T2W image. C, MTC, collagen is dark (arrow). D and E, Trichrome staining. The inset shows a magnified view of collagen type I (dark blue). F, Sirius red stain viewed under PLM. Collagen type I is yellow (arrow) and type III is green (arrow head).