Carotid systems and vertebral arteries are patent throughout with no evidence of stenosis, dissection or structural abnormality. The intracranial arterial vasculature is normal in appearance. There is preserved grey white matter differentiation and no evidence of brain swelling.
Conclusion:
Thyroid cartilage fracture.
No definite cervical spine fracture or dislocation. Mild symmetric C4/5 and C5/6 widening may be positional rather than due to facet injury- clinical correlation suggested. No evidence of neck vessel dissection.