Table 1 Sensitivities, specificities and accuracies for bone erosions of radiography and magnetic resonance imaging (MRI), with computed tomography (CT) as reference
Bones with erosions (number of erosions) | Radiography | MRI | MRI values in bones without radiographic erosions (n = 277) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
CT | Radiography | MRI | Sensitivity (%) | Specificity (%) | Accuracy (%) | Sensitivity (%) | Specificity (%) | Accuracy (%) | Sensitivity (%) | Specificity (%) | Accuracy (%) | |
Radius | 10 (11) | 2 (3) | 6 (8) | 20 | 100 | 62 | 60 | 100 | 81 | 50 | 100 | 79 |
Ulna | 15 (15) | 2 (2) | 14 (15) | 13 | 100 | 38 | 93 | 100 | 95 | 92 | 100 | 95 |
Scaphoid | 11 (14) | 3 (3) | 8 (8) | 27 | 100 | 62 | 64 | 90 | 76 | 50 | 90 | 72 |
Lunate | 10 (11) | 3 (3) | 11 (14) | 30 | 100 | 67 | 90 | 82 | 86 | 86 | 82 | 83 |
Triquetrum | 14 (17) | 5 (5) | 13 (16) | 36 | 100 | 57 | 86 | 86 | 86 | 100 | 86 | 94 |
Pisiforme | 8 (8) | 4 (5) | 1 (1) | 38 | 92 | 71 | 13 | 100 | 67 | 20 | 100 | 76 |
Trapezium | 8 (8) | 3 (5) | 3 (3) | 25 | 92 | 67 | 38 | 100 | 76 | 33 | 100 | 78 |
Trapezoid | 8 (10) | 2 (2) | 9 (9) | 25 | 100 | 71 | 86 | 85 | 86 | 83 | 85 | 84 |
Capitate | 14 (14) | 1 (1) | 12 (16) | 7 | 100 | 38 | 71 | 71 | 71 | 69 | 71 | 70 |
Hamate | 9 (10) | 3 (4) | 7 (8) | 33 | 100 | 71 | 56 | 83 | 71 | 50 | 85 | 71 |
Metacarpal base 1 | 8 (9) | 3 (3) | 5 (5) | 38 | 100 | 76 | 63 | 100 | 86 | 40 | 100 | 83 |
Metacarpal base 2 | 16 (19) | 1 (1) | 9 (10) | 6 | 100 | 29 | 56 | 100 | 67 | 53 | 100 | 65 |
Metacarpal base 3 | 5 (5) | 1 (1) | 2 (2) | 20 | 100 | 81 | 20 | 94 | 76 | 25 | 94 | 80 |
Metacarpal base 4 | 8 (8) | 3 (3) | 2 (2) | 38 | 100 | 76 | 25 | 100 | 71 | 20 | 100 | 78 |
Metacarpal base 5 | 7 (7) | 2 (2) | 2 (2) | 29 | 100 | 76 | 14 | 93 | 67 | 20 | 93 | 74 |
Total | 151 (166) | 38 (43) | 104 (119) | 24 | 99 | 63 | 61 | 93 | 77 | 59 | 93 | 79 |