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Subject 3. A 7-year-old girl involved in a motor vehicle collision. Initial sagittal (right, A; left, B) CT images demonstrate widening of the posterior CCI joint space, and coronal (C) images demonstrate mild asymmetry of the CCI joint spaces. Sagittal T2-weighted image of the cervical spine (D) performed 3 days later demonstrates lifting of the tectorial membrane off the dorsal clival cortex (open white arrow).
