Relations between inflammation on MRI and ultrasonography and subsequent erosive progression on CT at the bone level (MRI bone oedema) and joint level (MRI synovitis, ultrasonography power Doppler, ultrasonography grey scale synovitis) at 12 months
Imaging parameter | Present versus not present at baseline | Ever present versus never present | Time integrated (AUC) score |
---|---|---|---|
MRI bone oedema | Fisher: p<0.001 | Fisher: p<0.001 | Mann–Whitney: p<0.001 |
RR: 3.8 (1.5–9.3); p=0.0042 | RR: 14.8 (4.3–50.7); p<0.0001 | ||
MRI synovitis | Fisher: p=0.77 | Fisher: p=0.93 | Mann–Whitney: p=0.063 |
RR: 0.68 (0.04–11.5); p=0.79 | RR: 0.24 (0.017–3.6); p=0.30 | ||
Ultrasonography power Doppler | Fisher: p=0.036 | Fisher: p=0.006 | Mann–Whitney: p=0.002 |
RR: 7.6 (0.91–63.2); p=0.061 | RR: 16.9 (0.97–294); p=0.052 | ||
Ultrasonography grey-scale synovitis | Fisher: p=0.030 | Fisher: p=0.034 | Mann–Whitney: p=0.037 |
RR: 11.2 (0.65–195.7); p=0.10 | RR: 10.3 (0.59–179.3); p=0.11 |
AUC, area under the curve.