Figure 4
Example of concentric and eccentric lesions in multi-contrast weighted CMR. Cross-sectional TOF and PD weighted images show examples of femoral arterial plaques with eccentricity index of 0.39 (concentric) and 0.78 (eccentric), respectively. The eccentric lesion has significant larger wall area (27.50 mm2 vs.15.23 mm2), total vessel area (87.65 mm2 vs. 61.55 mm2), maximum wall thickness (5.09 mm vs. 2.27 mm) and mean wall thickness (2.43 mm vs. 2.27 mm), but still preserves larger lumen area (27.50 mm2 vs. 15.23 mm2). A big piece of calcification (CA), which shows dark signal on all weightings, can be detected in eccentric plaque.