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A, Oblique sagittal partial MIP image of IACTA obtained from a 73-year-old man with TAAA. Contrast material is not mixed throughout the aorta, and dorsal portion of the aorta and the intercostal or lumbar arteries (arrow) are enhanced over 1000 HU. B, Oblique sagittal partial MIP image of IVCTA obtained from a 58-year-old man with TAAA. The aorta is homogeneously enhanced, but intercostal or lumbar arteries (arrow) are poorly visualized in comparison with IACTA.
