There is mild generalized atrophy.  Scattered patchy foci of decreased attenuation is seen in the subcortical and periventricular white matter consistent with chronic small vessel ischemic changes.  There are subtle areas of increased attenuation seen within the frontal lobes bilaterally.  Given the patient's clinical presentation, these likely represent small hemorrhagic contusions.  Other differential considerations include cortical calcifications, which are less likely.  The brain parenchyma is otherwise normal in attenuation without evidence of mass, midline shift, hydrocephalus, extra-axial fluid, or acute infarction.  The visualized paranasal sinuses and mastoid air cells are clear.  The bony calvarium and skull base are unremarkable.