title: Ultrasonography in the evaluation of bone erosions.
abstract: OBJECTIVE
  To demonstrate the diagnostic efficacy of ultrasonography in depicting erosions in patients with rheumatoid arthritis and to compare sonographic and radiographic findings.
  
  
  METHODS
  Sonographic images were obtained with an AU-4 Idea Esaote Biomedica (Genoa, Italy) equipped with a 13 MHz linear transducer.
  
  
  RESULTS
  The images reported in this essay are representative examples of the ability of ultrasonography to detect and characterise even minimal bone margin changes in rheumatoid arthritis.
  
  
  CONCLUSIONS
  Ultrasonography with very high frequency transducers can depict bone erosions in early target areas of bone resorption. However, further studies are needed to validate this technique and to evaluate the relation between sonographic findings and those obtained with other imaging techniques (standard radiology, magnetic resonance).
authors.affiliation: Department of Rheumatology, University of Ancona, Italy. reuman@popcsi.unian.it
authors.forename: W
authors.initials: W
authors.lastname: Grassi
authors.forename: E
authors.initials: E
authors.lastname: Filippucci
authors.forename: A
authors.initials: A
authors.lastname: Farina
authors.forename: F
authors.initials: F
authors.lastname: Salaffi
authors.forename: C
authors.initials: C
authors.lastname: Cervini
mesh_terms: D001172:Arthritis, Rheumatoid / Q000000981:diagnostic imaging*; D016022:Case-Control Studies; D006801:Humans; D011237:Predictive Value of Tests; D012680:Sensitivity and Specificity; D014463:Ultrasonography