Clinical question: Worsening headache; rule out any structural lesions. Signs and symptoms: Worsening headaches. Nonenhanced brain MRI:Negative diffusion weighted series.Examination demonstrates normal anatomical morphology of the brain. There is normal signal intensity of brain parenchyma on all MRI sequences.Unremarkable cerebral cortex, cortical sulci, ventricular system, CSF spaces and brain myelination.The signal void of major intracranial arterial branches are identified.The signal intensity of the intracranial venous sinuses is "normal.Unremarkable calvarium and soft tissues of the scalp.Unremarkable images through the orbits.All the paranasal sinuses and bilateral mastoid air cells and middle ear cavities demonstrate normal pneumatization signal pattern.
Unremarkable nonenhanced brain MRI.