Figure 4
T 2 -weighted MR images of a patient with Chiari Type I and syringomyelia in the cervical region. A: The preoperative sagittal image. The syringomyelic cavity is the pale area in the center of the spinal cord (arrow) B: postoperative sagittal image at 12 months after surgery showing the syrinx cavity has decreased in size (arrow). The new iatrogenic cisterna magna is demonstrated.