Figure 4
Sagittal magnetic resonance imaging taken 13 hours and 12 days after spinal surgery. Sagittal T1-weighted (a) and T2-weighted (b) magnetic resonance images taken 13 hours after spinal surgery, demonstrating herniation of the cerebellar tonsils. Sagittal T1-weighted (c) and T2-weighted (d) magnetic resonance images taken 12 days after spinal surgery demonstrating ascent of the cerebellum to the normal position.