Clinical question: Evaluate for cause of headaches. Signs and symptoms: Headaches; history of migraine. Nonenhanced brain MRI:Negative diffusion weighted series.There is normal anatomical morphology of brain parenchyma and with normal signal intensity on all MRI sequences.Unremarkable renal cortex, cortical sulci, ventricular system, CSF spaces and brain myelination.The signal voids of major intracranial arterial branches are identified and unremarkable. The signal intensity of the intracranial venous sinuses are within normal.Unremarkable images through the orbits and paranasal sinuses. The pneumatized bilateral mastoid air cells and middle ear cavities. Unremarkable calvarium and soft tissues of the scalp.
1.Unremarkable nonenhanced brain MRI.2.Normal pneumatization signal pattern of mastoid air cells, middle ear cavities and paranasal sinuses with the exception of a small retention cyst in the left maxillary sinus.