CT of the Head is fast and readily available, which makes it a great choice for trauma evaluation, sudden onset of headaches, and sinus disease. CT is also alternative to MRI when patients cannot have an MRI due to pacemakers, aneurysm clips, pain stimulators and metal implants. IV iodinated contrast media is often indicated for an accurate evaluation of the vasculature and/or disease. The need for IV contrast is determined by the reason for the scan.
CT scanning is the ideal modality when analyzing all bony structures of the head, including the temporal bones (patients with hearing problems), paranasal sinuses (sinusitis) and facial bones (to assess for fractures due to trauma).
Eat lightly the day of the exam. Do not eat within one hour of your procedure.