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Figure 2 Fibrous coronary plaque imaged in vivo by optical coherence tomography (OCT) (A) and intravascular ultrasound (IVUS) (B). (A) From 9 o’clock to 2 o’clock, this OCT image demonstrates visualization of the intima (with intimal hyperplasia [i]), media (m) and adventitia (a). The internal and external elastic laminae are visible as signal-rich lines bordering the media (inset). A plaque extending from 2 o’clock to 9 o’clock contains a homogeneous, signal-rich region consistent with a fibrous plaque (f) that is partially obscured by a guidewire shadow artifact (*). (B) In the corresponding IVUS image, the fibrous plaque (f) is also visualized. Tick marks, 1 mm.
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