Table 3 Erosions detected by CT in joint quadrants and semi-quantitatively assessed according to the RAMRIS erosion score, and proportion of erosions detected by US
RAMRIS erosion score | Quadrants with CT erosion (n) | US-detected erosions (%) |
|---|---|---|
All areas | ||
Grade 1 (1–10 %) | 51 | 27.5 |
Grade 2 (11 − 20 %) | 31 | 41.9 |
Grade 3 − 10 (21–100 %) | 10 | 90.0a |
Areas with best US reliabilityb | ||
Grade 1 (1 − 10 %) | 15 | 53.3 |
Grade 2 (11 − 20 %) | 15 | 60.0 |
Grade 3 − 10 (21 − 100 %) | 5 | 100.0 |