Table 1.
Typical findings of RA and PsA in MRI, US and DECT.
| RA | PsA | |
|---|---|---|
| MR imaging | Joint capsule synovitis | Enthesitis |
| Tenosynovitis | Joint capsule synovitis | |
| Bone marrow edema | Tenosynovitis and peritendinitis | |
| Bone erosion | Periarticular inflammation | |
| Joint space narrowing | Bone marrow edema | |
| Bone erosion/bone proliferation | ||
| US | Same as MRI but unable to detect bone marrow edema | Same as MRI but unable to detect bone marrow edema |
| DECT | Same as MRI but unable to detect bone marrow edema of small bones | Same as MRI but unable to detect bone marrow edema of small bones |