Infrarenal Abdominal Aortic Aneurysms at Multi-Detector Row CT Angiography: Intravascular Enhancement without a Timing Acquisition

Macari Michael, Israel Gary M., Berman Phillip, Lisi Maria, Tolia Anuj J., Adelman Mark, Megibow Alec J.

Computed tomographic (CT) angiography has become an important imaging technique in the evaluation of patients with infrarenal abdominal aortic aneurysms. In most patients, correctly performed CT angiography can reveal all the information needed for planning optimal surgical therapy, potentially obviating preoperative conventional angiography (1). Optimized CT angiography of infrarenal aneurysms requires adequate vascular opacification of the abdominal aorta and pelvic runoff vessels (comomn iliac, external iliac, and common femoral arteries). In addition, thin-section helical CT facilitates the use of nearly isotropic voxels for superior three-dimensional rendering.