title: Correlation of diffusion-weighted magnetic resonance imaging with neuropathology in Creutzfeldt-Jakob disease.
abstract: BACKGROUND
  Although the diagnosis of Creutzfeld-Jakob disease (CJD) is straightforward in fully developed cases, a definitive diagnosis can be difficult early in the course of the illness. T2-weighted magnetic resonance imaging (MRI) signal abnormalities, and recently, diffusion-weighted MRI abnormalities, have been described in patients with CJD, suggesting the utility of MRI in the early recognition of CJD.
  
  
  OBJECTIVE
  To correlate diffusion-weighted MRI signal abnormalities with neuropathologic changes in CJD.
  
  
  METHODS
  Diffusion-weighted MRI and neuropathologic changes of 2 patients with autopsy-proven CJD were examined in a blinded fashion by a neuroradiologist and a neuropathologist.
  
  
  RESULTS
  Areas of bright signal on diffusion-weighted MRI correlated with a higher degree of spongiform changes.
  
  
  CONCLUSIONS
  Diffusion-weighted MRI in CJD demonstrates specific-signal abnormalities that correlate well with areas of the most severe and characteristic neuropathologic changes.
authors.affiliation: Department of Neurology, North Shore University Hospital, 300 Community Dr, Manhasset, NY 11030, USA.
authors.forename: Sanjay
authors.initials: S
authors.lastname: Mittal
authors.forename: Peter
authors.initials: P
authors.lastname: Farmer
authors.forename: Peter
authors.initials: P
authors.lastname: Kalina
authors.forename: Peter B
authors.initials: PB
authors.lastname: Kingsley
authors.forename: John
authors.initials: J
authors.lastname: Halperin
mesh_terms: D000368:Aged; D001921:Brain / Q000473:pathology; D007562:Creutzfeldt-Jakob Syndrome / Q000473:pathology*; D017809:Fatal Outcome; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D011237:Predictive Value of Tests