Figure 3.

An 83-year-old male candidate for transcatheter aortic valve implantation (TAVI) submitted to DECT examination. The study of the thoracoabdominal aorta (a), performed with 85 mL of contrast media for the evaluation of peripheral accesses ((a), arrows), revealed a pulmonary right hilar cancer (b) with osteolytic bone metastases (c). After drawing circular regions of interest (ROIs) within right hilar mass, pleural effusion (b), and bone metastases (c), the attenuation was measured at the given energy level, demonstrating the absence of disease in the pleural effusion (b,d,e), further confirmed by spectral iodine maps ((d), spectral curve, (e), scatterplot GSI).