Vascular MRI Evaluation in Giant Cell Arteritis (VEGA)

Who May Qualify: - Age 50 years or older - First presentation of suspected GCA - New or worsening cranial manifestations within 4 weeks of enrollment concerning for active GCA - Elevated CRP greater than 1.0 mg/dl - Plan to undergo temporal artery biopsy or ultrasound for diagnosis Who Should NOT Join This Trial: - Contra-indication to receiving MRI including: Implanted medical devices, pacemaker, and metallic foreign fragments inside body/orbits Known gadolinium allergy Women who are pregnant or nursing - Absence of cranial symptoms related to GCA (e.g., only large vessel GCA) Always talk to your doctor about whether this trial is right for you.