Table 1 Histological type and apparent diffusion coefficient (ADC) values of 198 bone masses (mean ± SD × 10−3 mm2/s)
Type of bone masses | No. of lesions | High SI on T2WI (%) | High SI on DWI (%) | Range of ADC values | Mean ADC value |
|---|---|---|---|---|---|
Benign bone lesions | 84 | 54 (64.3) | 50 (59.5) | 0.49–1.59 | 1.17 ± 0.36 |
Non-ossifying fibroma | 17 | 4 (23.5) | 2 (11.8) | 0.49–0.99 | 0.78 ± 0.17 |
Osteofibrous dysplasia | 18 | 3 (16.7) | 1 (5.6) | 0.89–1.19 | 0.97 ± 0.17 |
Chondromyxoid fibroma | 6 | 5 (83.3) | 4 (66.7) | 1.18–1.59 | 1.33 ± 0.15 |
Langerhans cell histiocytosis | 28 | 28 (100) | 28 (100) | 0.96–1.55 | 1.29 ± 0.18 |
Giant cell tumor of bone | 15 | 14 (93.3) | 15 (100) | 0.98–1.47 | 1.21 ± 0.20 |
Malignant bone lesions | 114 | 101 (88.6) | 105 (92.1) | 0.58–1.35 | 0.86 ± 0.20 |
Chordoma | 27 | 21 (77.8) | 24 (88.9) | 0.59–1.11 | 0.80 ± 0.14 |
Ewing sarcoma | 9 | 6 (66.7) | 7 (77.8) | 0.70–0.91 | 0.82 ± 0.07 |
Osteosarcoma | 8 | 6 (75.0) | 5 (62.5) | 0.87–1.02 | 0.97 ± 0.08 |
Chondrosarcoma | 12 | 10 (83.0) | 11 (91.7) | 0.69–1.21 | 0.94 ± 0.15 |
Plasmacytoma | 8 | 8 (100) | 8 (100) | 0.68–1.12 | 0.86 ± 0.15 |
Primary lymphoma | 11 | 11 (100) | 11 (100) | 0.68–1.09 | 0.87 ± 0.14 |
Metastatic bone tumor | 39 | 39 (100) | 39 (100) | 0.58–1.12 | 0.81 ± 0.14 |