Duplex Evaluation: Colorflow imaging can contribute to an evaluation of the deep abdominal vessels by defining the functional lumen of a large abdominal aortic aneurysm, locating smaller peripheral vessels of the aorta, determining stenosis, distinguishing the functional and nonfunctional lumen or an aortic dissection, and assessing other less common lesions such as iatrogenic pseudoaneurysms of the iliac arteries and aorta. Indications are: pulsatile abdominal mass, abdominal bruit, bilateral leg pain or weakness, hypertension, renal failure, or abdominal, flank or back pain.

pertaining to the aorta, or iliac vessels, the main arteries which begin in the abdomen and supply blood to patients' legs.