Fig. 2

Compare the morphological results of ruptured abdominal aortic aneurysm (RAAA) and asymptomatic intact abdominal aortic aneurysm (IAAA) for groups. Compared with the diameter-matched asymptomatic IAAA group, the RAAA showed significantly larger volume of abdominal aortic aneurysm (VAAA), volume of intraluminal thrombus (VILT) and tortuosity, smaller aortic neck length (ANL) and aortic neck angle β (AAA β). VILT/VAAA = ratio of volume of intraluminal thrombus to volume of abdominal aortic aneurysm.