Headache [R51], Reason for Study: ^Reason: eval CTA findings History: headache There is limited exam due to patient's diffusion to continue.There is no evidence of acute ischemic lesion.The ventricles, sulci and cisterns are unremarkable. There is no mass, mass effect, edema, midline shift. The cerebellar tonsil shows slightly downward displacement at the level of foramen magnum which is within normal limits.Normal flow voids are identified in the major intracranial vessels. The mastoid air cells are clear. Mucosal thickenings on bilateral maxillary sinuses.
1. Limited exam.2. No evidence of acute ischemic lesion.