Images of the abdominal aorta in a patient with Takayasu arteritis are shown . A. Volume rendering viewed in the antero-posterior direction of a CE-MRA acquired using a coronal slab demonstrates marked irregularity of the infraceliac abdominal aorta. B. Maximum intensity projection of a CE-MRA obtained using a sagittal slab at a subsequent visit shows ostial disease of the celiac trunk (arrow) and absence of the superior mesenteric artery (SMA, open triangle). C. Post-contrast volumetric interpolated breathhold T1-weighted image shows thickening of the wall of the abdominal aorta (arrow) and obliteration of the SMA ostium (notched arrow).