 There are no masses, mass effect or midline shift. There is no evidence for intracranial hemorrhage or acute cerebral, brainstem or cerebellar infarction. No diffusion-weighted abnormalities are identified. The ventricles and sulci are normal in size. There are no extraaxial fluid collections or subdural hematomas. The cerebellar tonsils are in normal position. Flow voids are present within the major vessels indicating patency. The paranasal sinuses and mastoid air cells are clear.
Negative noncontrast brain MRI.