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Figure 2 Data From a 46-Year-Old Subject With a Focal Luminal Stenosis in the Proximal RCA
Coronary magnetic resonance imaging (MRI) (A) and multislice computed tomography (MSCT) (B) show evidence of focal plaque burden (white arrows), with MSCT revealing a mixed calcified/noncalcified plaque. The corresponding X-ray angiogram (C) confirms this finding without providing information with regard to plaque burden or composition. In the lower row, a "hot spot" can be observed in the distal right coronary artery (RCA) on the precontrast delayed-enhancement cardiovascular magnetic resonance (DE-CMR) vessel wall scan (E), which may be due to thrombus or hemorrhage. Location of this spot is indicated on the identically formatted coronary MRI (D). On the corresponding X-ray angiogram (C), an abrupt change in lumen diameter can be observed suggestive of occlusion and/or thrombus. On the DE-CMR image (F), strong focal contrast uptake can be observed at the location of the proximal RCA stenosis (solid white arrows). Another focal hotspot is present at the midsection of the RCA where MSCT (B) reveals a mixed calcified/noncalcified plaque (dashed white arrows). CATH = X-ray coronary angiography.
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