Spearman correlations.
| No. of Vessels Seen on MRA | ||
|---|---|---|
| Feature | Spearman r | p |
| PDU blood flow | 0.79 | < 0.0001 |
| Ultrasound synovitis score | 0.68 | < 0.0001 |
| Ultrasound erosion score | 0.03 | 0.86 |
| RAMRIS wrist synovitis | 0.73 | < 0.0001 |
| RAMRIS wrist bone edema score | 0.43 | 0.02 |
| RAMRIS wrist bone erosion score | 0.78 | < 0.0001 |
| RAMRIS MCP synovitis | 0.69 | < 0.0001 |
| RAMRIS MCP bone edema score | 0.15 | 0.44 |
| RAMRIS MCP bone erosion score | 0.33 | 0.08 |
| Anti-CCP antibodies | 0.43 | 0.02 |
| Rheumatoid factor | 0.43 | 0.02 |
| ESR | 0.38 | 0.04 |
| CRP | 0.07 | 0.71 |
| MHAQ | 0.25 | 0.2 |
| DAS28 | 0.24 | 0.21 |
MRA: magnetic resonance angiography; PDU: power Doppler ultrasound; RAMRIS: Outcome Measures in Rheumatology (OMERACT) rheumatoid arthritis MRI scoring system; MCP: metacarpophalangeal joint; anti-CCP: anti-cyclic citrullinated peptide; ESR: erythrocyte sedimentation rate; CRP: C-reactive protein; MHAQ: Modified Health Assessment Questionnaire; DAS28: Disease Activity Score.