Localized enlargement of the abdominal aorta is commonly known as AAA. Generally AAA does not exhibit any symptoms except when they are ruptured. The evaluation of risk of rupture is critical otherwise it may lead to complications. The undetected infrarenal Abdominal Aortic Aneurysm (AAA) growth may often lead to rupture, which is a high-mortality complication.

Some AAA patients exhibit inhomogeneous luminal contrast reduction at first-pass CT angiography (CTA). The scientists recently published a study which assessed whether there is any relationship between observation luminal contrast reduction and aneurysm growth. The scientists included 67 consecutive pre-repair AAA CTAs were included in this retrospective study. The “Gravitational Gradient” (GG) was defined as the “ratio of the mean attenuation in a region-of-interest placed posteriorly to that in a region-of-interest placed…