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. Author manuscript; available in PMC: 2015 Mar 8.
Published in final edited form as: J Nucl Cardiol. 2009 May 29;16(4):620–639. doi: 10.1007/s12350-009-9100-2

Figure 9.

Figure 9

Comparison of the three types of plaque (fibrous, fibrocalcific, and lipid-rich) as identified with OCT, IVUS, and histology. The top row shows homogeneous, signal-rich regions that characterize the fibrous plaque in OCT, which is difficult to differentiate with gray scale IVUS. The middle row shows a fibrocalcific plaque which appears as well-delineated signal-poor regions with sharp borders for OCT and bright echolucent regions in IVUS. Lipid-rich plaques are on the bottom row, which appear as signal-poor regions with diffuse borders on OCT and IVUS (Reproduced with permission from58).