This ACE Clinical Guidance (ACG) covers the use of CT/MRI brain for diagnostic investigation of headache, providing evidence-based recommendations on the role of CT/MRI brain for primary and secondary headaches.
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When to order CT/MRI for headache (August 2022)
|1.||Patients with migraine or TTH, without red flags: CT is not indicated; MRI is not indicated.|
|2.||Patients with cluster headache or other trigeminal autonomic cephalalgias, without red flags: CT may be indicated; MRI is indicated.|
|3.||Patients with sudden, severe headache: CT is indicated; MRI may be indicated.|
|4.||Patients with headache and cancer or infection (suspected or known): CT may be indicated; MRI is indicated.|
|5.||Patients with post-traumatic headache: CT is indicated; MRI may be indicated.|
|6.||Patients with new headache accompanied by red flags, or with worsening headache: CT may be indicated; MRI is indicated.|
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