I am reading a radiologists report from a cat scan.of the brain. It. Says there is global brain volume loss with prominence of the ventricles and CSF spaces and there is no evidence of hydrocephalus and no effacement of the basal cisterns. It also says gray-white matter differentiation is well preserved throughout without evidence of acute ischemic. Patchy white matter low attenuation is nonspecific but likely related to chronic small vessel ischemic change. Intracranial arterial vascular calcification are noted. There visualized paranasal sinuses and mastoid air cells are free of significant opacification. The calvarium appears unremarkable. What exactly is this saying?