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A 69-year-old woman with bilateral pulmonary embolism. Fused dual-energy CT angiographic image/iodine perfusion maps (a, b) simultaneously show bilateral arterial filling defects, larger on the right with proximal extension in the lobar arteries and interlobar artery, and concordant wedge-shaped perfusion defects in the right upper lobe. Axial CT image (c) at the same level as (b) does not show any abnormality in the corresponding lung parenchyma.
