Imaging findings by different modalities accepted as potential measures of disease activity for both giant cell arteritis and Takayasu arteritis.
| Modality | Findings |
|---|---|
| CT angiography | Arterial stenosis |
| Aneurysm | |
| Arterial wall thickening | |
| Arterial wall enhancement | |
| PET-CT | Total uptake values |
| Individual artery update values | |
| Relative uptake compared to liver | |
| MR angiography | Arterial stenosis |
| Aneurysm | |
| Arterial wall thickening | |
| Arterial wall enhancement | |
| Ultrasound | Arterial stenosis |
| Aneurysm | |
| Arterial wall thickening |
CT: computerized tomography; PET: positron emission tomography; MR: magnetic resonance.