noninfectious (more commonl)
Takayasu arteritis and giant cell arteritis (GCA). It is also seen in other collagen vascular disorders such as rheumatoid arthritis and ankylosing spondylitis
tuberculosis, syphilis, or infection with Salmonella or other bacterial or viral pathogens.
CT angiography has excellent spatial resolution and is commonly the initial imaging study (gated)
Magnetic resonance (MR) imaging is recommended for serial imaging
Nuclear medicine imaging with fluorine 18 fluorodeoxyglucose (FDG) positron emission tomography (PET) or gallium 67 (67Ga) is helpful in assessment of inflammatory activity
1- Restrepo et al Aortitis: Imaging Spectrum of the Infectious and Inflammatory Conditions of the Aorta, Radiographics