title: High-Resolution Computed Tomography in the Diagnosis of Diffuse Parenchymal Lung Diseases: Is it Possible to Improve Radiologist's Performance?
abstract: OBJECTIVE
  The aims of this study were to assess the concordance between high-resolution computed tomography (HRCT) diagnostic hypotheses (DH) and final diagnosis in patients with diffuse lung disease and to evaluate whether clinical data or the radiologist's degree of certainty influence concordance.
  
  
  METHODS
  Concordances between first and any one of radiologists' DH and final diagnosis were assessed before and after access to clinical data, with study of importance of degree of certainty in the DH formulated.
  
  
  RESULTS
  Concordances of HRCT DH and final diagnosis were 48% and 76%, respectively, considering first or any of the DH without access to clinical data. Accessing clinical data improved concordance especially for hypersensitivity pneumonitis. Diagnostic hypotheses formulated with high degree of confidence were correct in 69% of cases.
  
  
  CONCLUSIONS
  First HRCT DH was concordant with final diagnosis in approximately half of cases, increasing to approximately 75% when considering any 1 of the 3 DH. Radiologists' knowledge of clinical data or increased degree of certainty improved concordance of HRCT DH and the final diagnosis.
authors.affiliation: From the *Radiology Department, Universidade Federal de São Paulo (UNIFESP); †Radiology Department, Fleury; and ‡Radiology Department, HCor, São Paulo, Brazil.
authors.forename: Carlos Gustavo Yuji
authors.initials: CG
authors.lastname: Verrastro
authors.forename: Viviane Baptista
authors.initials: VB
authors.lastname: Antunes
authors.forename: Dany
authors.initials: D
authors.lastname: Jasinowodolinski
authors.forename: Giuseppe
authors.initials: G
authors.lastname: DʼIppolito
authors.forename: Gustavo de Souza Portes
authors.initials: GS
authors.lastname: Meirelles
mesh_terms: D000328:Adult; D002983:Clinical Competence / Q000706:statistics & numerical data*; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008168:Lung / Q000000981:diagnostic imaging; D017563:Lung Diseases, Interstitial / Q000000981:diagnostic imaging*; D008297:Male; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D014057:Tomography, X-Ray Computed / Q000379:methods*