| Number of areas with erosions | Sensitivity* | Specificity* | Accuracy* | Bone coverage by MagneVu† | |||||||||||||||
| CT | Artoscan | MagneVu | CR | Artoscan | MagneVu | CR | Artoscan | MagneVu | CR | Artoscan | MagnVu | CR | 0% | 1–33% | 34–66% | 67–99% | 100% | ||
| MB2 | 8 | 7 | 1 | 0 | 0.50 | 0.14 | 0.00 | 0.82 | 1.00 | 1.00 | 0.72 | 0.75 | 0.68 | 4.1 | 0.0 | 0.0 | 62.5 | 29.2 | |
| MB3 | 7 | 2 | 1 | 0 | 0.33 | 0.20 | 0.00 | 1.00 | 1.00 | 1.00 | 0.84 | 0.83 | 0.76 | 4.1 | 0.0 | 8.3 | 62.5 | 25.0 | |
| MB4 | 6 | 3 | 0 | 1 | 0.60 | 0.00 | 0.20 | 1.00 | 1.00 | 1.00 | 0.92 | 0.83 | 0.84 | 4.1 | 0.0 | 8.3 | 66.7 | 20.8 | |
| MB5 | 8 | 1 | 0 | 2 | 0.14 | 0.00 | 0.29 | 1.00 | 1.00 | 1.00 | 0.76 | 0.75 | 0.80 | 33.3 | 12.5 | 0.0 | 50.0 | 4.1 | |
| All metacarpal bases | 29 | 13 | 2 | 3 | 0.38 | 0.09 | 0.12 | 0.56 | 1.00 | 1.00 | 0.81 | 0.79 | 0.77 | 13.1 | 3.6 | 4.8 | 56.0 | 22.6 | |
| Radius | 13 | 6 | 1 | 4 | 0.55 | 0.10 | 0.27 | 1.00 | 1.00 | 0.93 | 0.80 | 0.63 | 0.64 | 0.0 | 4.1 | 8.3 | 66.7 | 20.8 | |
| Ulna | 9 | 8 | 1 | 6 | 0.71 | 0.14 | 0.57 | 0.83 | 1.00 | 0.89 | 0.80 | 0.75 | 0.80 | 25.0 | 25.0 | 12.5 | 25.0 | 12.5 | |
| All bones of R-U joint | 22 | 14 | 2 | 10 | 0.61 | 0.12 | 0.39 | 0.91 | 1.00 | 0.91 | 0.80 | 0.69 | 0.72 | 12.5 | 14.6 | 10.4 | 45.8 | 16.7 | |
| Scaphoid | 17 | 7 | 2 | 6 | 0.47 | 0.07 | 0.33 | 1.00 | 0.90 | 0.90 | 0.68 | 0.42 | 0.56 | 4.1 | 0.0 | 16.7 | 29.2 | 50.0 | |
| Lunate | 19 | 12 | 5 | 3 | 0.67 | 0.29 | 0.17 | 1.00 | 1.00 | 1.00 | 0.76 | 0.50 | 0.40 | 8.3 | 0.0 | 4.1 | 29.2 | 58.3 | |
| Triquetrum | 14 | 8 | 6 | 2 | 0.54 | 0.42 | 0.15 | 0.92 | 0.92 | 1.00 | 0.72 | 0.67 | 0.56 | 8.3 | 4.1 | 4.1 | 41.7 | 41.7 | |
| Pisiform | 7 | 3 | 0 | 0 | 0.40 | 0.00 | 1.00 | 0.95 | 1.00 | 1.00 | 0.84 | 0.79 | 1.00 | 91.7 | 0.0 | 0 | 4.1 | 4.1 | |
| Hamate | 15 | 8 | 5 | 0 | 0.50 | 0.38 | 1.00 | 0.91 | 1.00 | 1.00 | 0.68 | 0.67 | 1.00 | 4.1 | 0.0 | 8.3 | 41.7 | 45.8 | |
| Capitate | 17 | 9 | 8 | 1 | 0.40 | 0.50 | 0.07 | 0.70 | 0.90 | 1.00 | 0.52 | 0.67 | 0.44 | 4.1 | 0.0 | 8.3 | 25.0 | 62.5 | |
| Trapezoid | 8 | 8 | 3 | 0 | 0.57 | 0.33 | 0.00 | 0.78 | 0.94 | 1.00 | 0.72 | 0.79 | 0.72 | 0.0 | 4.1 | 8.3 | 25.0 | 62.5 | |
| Trapezium | 9 | 5 | 0 | 2 | 0.50 | 0.00 | 0.13 | 0.94 | 1.00 | 0.94 | 0.80 | 0.71 | 0.68 | 83.3 | 4.1 | 8.3 | 0.0 | 4.1 | |
| All bones of the carpus | 106 | 60 | 29 | 14 | 0.52 | 0.28 | 0.33 | 0.90 | 0.96 | 0.98 | 0.72 | 0.65 | 0.67 | 25.5 | 1.6 | 7.3 | 24.5 | 41.1 | |
| All wrist bones | 157 | 87 | 33 | 27 | 0.50 | 0.23 | 0.29 | 0.92 | 0.98 | 0.98 | 0.75 | 0.70 | 0.71 | 19.7 | 3.9 | 6.7 | 37.9 | 31.6 | |
| MCP + wrist | 188 | 116 | 55 | 45 | 0.53 | 0.28 | 0.34 | 0.93 | 0.96 | 0.98 | 0.81 | 0.76 | 0.79 | – | – | – | – | – | |
*With CT as the standard reference.
†Values indicate the proportion (%) of bones which were covered 0%, 1–33%, 34–66%, 67–99% and 100%, respectively, by the MagneVu examination.
CR, conventional radiography; MB, metacarpal base; MCP, metacarpophalangeal joint; R-U, radio-ulnar.