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

Døhn et al. Arthritis Research & Therapy 2008 10:R25   doi:10.1186/ar2378