The radiologic index for WB-MRI in patients with CNO and RINBO5.
| Variables of Interest | RINBO Criterion | Value |
|---|---|---|
| No. of patient’s radiologically active lesions (RAL) | ||
| Unifocal | 1 | 1 |
| Paucifocal | 2–4 | 2 |
| Multifocal | ≥ 5 | 3 |
| Maximum size of patient’s RAL | ||
| Minor | < 10 mm | 1 |
| Average | 10–100 mm | 2 |
| Major | > 1000 mm | 3 |
| Extramedullary involvement | ||
| Acute | Periostal reaction and/or soft tissue edema | 1 |
| Chronic | Hyperostosis | 1 |
| Spinal involvement | 1 | |
| Acute | Radiologically active vertebral lesion | 1 |
| Chronic | CNO-related vertebral body deformation | |
| Maximum index point | 10 | |
WB-MRI: whole-body magnetic resonance imaging; CNO: chronic nonbacterial osteitis; RINBO: radiologic index for nonbacterial osteitis.