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Table 4: CNS location and MRI activity^{^a}
Imaging Section Brain Cervical Spine Thoracic Lumbar Spine Orbit
MRI activity 33 (31%) 13 (14%) 8 (10%) 0 (0%) 4 (44%)
No MRI activity 75 (69%) 80 (86%) 74 (90%) 22 (100%) 5 (56%)
Total 108 93 82 22 9
↵a Percentages of column totals are in parentheses.
Imaging Section	Brain	Cervical Spine	Thoracic	Lumbar Spine	Orbit
MRI activity	33 (31%)	13 (14%)	8 (10%)	0 (0%)	4 (44%)
No MRI activity	75 (69%)	80 (86%)	74 (90%)	22 (100%)	5 (56%)
Total	108	93	82	22	9