Which imaging studies are useful in the diagnosis of aortic aneurysms in giant cell arteritis (GCA) (temporal arteritis)?

Updated: Sep 03, 2020
  • Author: Mythili Seetharaman, MD; Chief Editor: Herbert S Diamond, MD  more...
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Answer

Because aneurysms of the aorta or other vessels are often asymptomatic, unless they rupture, screening all patients with GCA for large-vessel disease with computed tomography (CT) is prudent. MRI can also be used to evaluate aortic involvement in GCA. [101] Vessel wall thickening and edema may be evident on T2-weighted images, and increased mural enhancement may be visible on postcontrast T1-weighted images, indicative of regional inflammation. Ultrasonography may be helpful for diagnosing and monitoring aortic involvement in GCA, including aortic aneurysms. [102]


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