Correlation of MTC and diffusion weighted imaging (DWI) of a carotid endarterectomy (CEA) specimen with histology. A, MTC. B, DWI (b value 1230 sec/mm2). C, Trichrome. The hypointense signal on MTC (black arrow) corresponds to the blue-stained collagen (collagen type I) on histological image (Trichorme). Lipid deposition is shown as hyperintensity on DWI (white arrow) and accumulates at the peripheral regions of the plaque.