An emerging change in diagnostic (dx) modalities used in GCA? Although the leading dx modality remains a temporal a bx at 67% from 2010-2018, this is a decrease from 84% (1950-2009). Imaging is being used 19% of the time from 2010-2018 per data from Mayo Clinic. @RheumNow #ACR20 https://t.co/J97oVAGObj