CT of abdominal aneurysm
Choice of modality
- CT of abdominal aneurysm is indicated in case of suspected rupture or imminent rupture, such as by pain and a palpable abdominal mass. For the abdominal aorta specifically, see CT of abdominal aortic aneurysm.
- Ultrasonography of abdominal aneurysm is generally the initial modality of choice in a non-emergent setting.
Abdominal aortic aneurysm
|>2.0 cm and <3.0 cm|
|Moderate||3.0 - 5.0 (or 5.5) cm|
|Large or severe||>5.0 or 5.5 cm|
- Main article: CT of abdominal aortic aneurysm
Abdominal aortic aneurysms are commonly divided according to their size and symptomatology. An aneurysm is usually defined as an outer aortic diameter over 3 cm (normal diameter of the aorta is around 2 cm), or more than 50% of normal diameter. The suprarenal aorta normally measures about 0.5 cm larger than the infrarenal aorta.
Common iliac artery aneurysm
|Normal||Diameter ≤12 mm|
|Ectasia||Diameter 12 to 18 mm|
|Aneurysm||Diameter ≥18 mm|
- For a full list of contributors, see article Radlines:Authorship for details. . Creators of images are attributed at the image description pages, seen by clicking on the images. See
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- Melissa L Kirkwood. Iliac artery aneurysm. Retrieved on 2018-02-23. Last updated: Mar 27, 2017.