Figure 3. MRI of the cervical spine and brain .
Magnetic resonance imaging (MRI) of the cervical spine, mid-sagittal T2-weighted image, and MRI of the brain, mid-sagittal T1-weighted image, show tonsillar herniation (orange arrow) and hydrosyringomyelia (blue arrow), appearing hyperintense on T2 and hypointense on T1-weighted images (blue arrow) (A and B).