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Signal intensity of optic nerve segments evaluated on 3D DIR in patients with MS
| Optic Nerve Segment (No. of Nerves Evaluated) | Signal Intensity on 3D DIR Compared with Signal Intensity of the Lateral Rectus Muscle (%) |
|||
|---|---|---|---|---|
| Hypointense | Isointense | Hyperintense | Isointense or Hyperintense | |
| Retrobulbar (190) | 108 (57%) | 8 | 74 | 82 (43%) |
| Canalicular (190) | 129 (68%) | 9 | 52 | 61 (32%) |
| Prechiasmatic (190) | 178 (93.5%) | 9 | 4 | 13 (6.5%) |
| Chiasm (95) | 89 (93.5%) | 5 | 1 | 6 (6.5%) |
