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Figure 12. Figures 12, 13. (12) Carotid artery stenosis. Three-dimensional reconstruction demonstrates significant (>90%) stenosis of the internal carotid artery just past the bifurcation (arrow). (13) Pulmonary embolism. Three-dimensional reconstructions with standard (a) and angioscopic (b) views demonstrate a large thrombus in the right main pulmonary artery (arrow) that subsequently proved to be tumor thrombus from metastatic breast cancer.