Figure 1From: Surface expression of CXCR4 on circulating CD133+progenitor cells is associated with plaque instability in subjects with carotid artery stenosisExample of lesion type IV-V in the right internal carotid artery. The necrotic core (←) shows low-signal intensity (SI) on both T1w and TOF images, but low SI to iso-SI on PDW and T2w images. Original magnification × 25.Back to article page