title: [Differential diagnosis of erosive osteochondrosis and bacterial spondylitis: magnetic resonance tomography (MRT)].
abstract: OBJECTIVE
  To evaluate retrospectively criteria in the differential diagnosis of erosive osteochondrosis (EO) and infectious spondylitis (IS) on the basis of MRI.
  
  
  METHODS
  T1-weighted sagittal images before and after Gd-DTPA application, T2-weighted TSE or T-STIR images of 23 patients with proven 15 and 41 patients with EO were evaluated. Criteria for this evaluation were morphology and extension of bone marrow edema, visibility of the low-intensity vertebral endplate, contrast enhancement and signal intensity in the disc space on T2-weighted and T-STIR images.
  
  
  RESULTS
  Bone marrow edema was more extensive in IS than in EO. The mean rated value for bone marrow edema on a four-level scale (0-3) was for IS 2.91 (+/- 0.29), for EO 1.32 (+/- 0.76, p < 0.001). In 37/41 cases of EO and in 22/23 cases of IS Gd-DTPA enhancement was found in the disc space (n.s.). In EO the low intensity endplate was visible in all parts in 36/41 cases (87.8%) on T1-weighted images, in IS not in a single case (0%). On T2-weighted or STIR images signal intensity of the discs was decreased in 82.1% of EO, 82.6% of segments in IS had water-equivalent signal intensity (p < 0.001).
  
  
  CONCLUSIONS
  If all the criteria are taken into consideration differential diagnosis of EO and IS on the basis of MRI findings is possible.
authors.affiliation: Institut für Radiologische Diagnostik, Universität München, Grosshadern.
authors.forename: A
authors.initials: A
authors.lastname: Stäbler
authors.forename: A
authors.initials: A
authors.lastname: Baur
authors.forename: A
authors.initials: A
authors.lastname: Krüger
authors.forename: M
authors.initials: M
authors.lastname: Weiss
authors.forename: T
authors.initials: T
authors.lastname: Helmberger
authors.forename: M
authors.initials: M
authors.lastname: Reiser
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001853:Bone Marrow / Q000473:pathology; D003937:Diagnosis, Differential; D004487:Edema / Q000175:diagnosis; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D010007:Osteochondritis / Q000175:diagnosis* / Q000000981:diagnostic imaging; D012544:Scheuermann Disease / Q000175:diagnosis; D012680:Sensitivity and Specificity; D013166:Spondylitis / Q000175:diagnosis*; D014057:Tomography, X-Ray Computed
vernacular_title: Differentialdiagnose der erosiven Osteochondrose und bakteriellen Spondylitis in der Magnetresonanztomographie (MRT).