title: [Creutzfeldt-Jakob disease: value of MRI].
abstract: OBJECTIVE
  To define the role of MRI in the diagnosis of Creutzfeldt-Jakob disease (CJD).
  
  
  METHODS
  14 patients with suspected CJD were studied within 3 years. MRI findings were correlated with WHO established diagnostic criteria (clinical findings, EEG, CSF with 14-3-3 protein assay).
  
  
  RESULTS
  12 patients had CJD. One patient each suffered from Hashimoto's encephalitis and ALS dementia complex, respectively. Nine of 12 CJD patients had increased signal intensity of the striatum (n = 8), pulvinar thalami (n = 5) and/or cerebellar and cerebral cortex (n = 3), respectively. Signal intensity was most pronounced on FLAIR sequences; six patients were studied with diffusion-weighted MRI and showed impaired diffusion in these areas. Both patients without CJD did not show the abovementioned signal changes (sensitivity 75%, specificity and positive predictive value 100%, respectively).
  
  
  CONCLUSIONS
  If patients with suspected CJD are studied with FLAIR and diffusion-weighted sequences, this disorder can reliably be proven or ruled out. Typical MRI findings narrow down the differential diagnosis and should be included in the WHO diagnostic criteria.
authors.affiliation: Radiologische Klinik, Rheinische Friedrich-Wilhelms-Universität Bonn. urbach@uni-bonn.de
authors.forename: H
authors.initials: H
authors.lastname: Urbach
authors.forename: S
authors.initials: S
authors.lastname: Paus
authors.forename: H J
authors.initials: HJ
authors.lastname: Tschampa
authors.forename: E
authors.initials: E
authors.lastname: Keller
authors.forename: H H
authors.initials: HH
authors.lastname: Schild
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001921:Brain / Q000473:pathology; D007562:Creutzfeldt-Jakob Syndrome / Q000175:diagnosis*; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D011237:Predictive Value of Tests