Can ultrasonography be used to diagnose 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

Although superficial temporal artery biopsy remains the standard for diagnosis of giant cell arteritis (GCA), color duplex ultrasonography can be used to diagnose GCA. A hypoechoic halo around the temporal artery lumen on color duplex sonograms has demonstrated high specificity for GCA, but limited sensitivity; in particular, early inflammatory changes that can be seen on TAB specimens do not produce the characteristic halo effect. [135]


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