title: Interobserver agreement between radiologists and radiology residents and emergency physicians in the detection of PE using CTPA.
abstract: OBJECTIVE
  To assess interobserver agreement between thoracic radiologists, radiology residents, and emergency physicians in diagnosing pulmonary embolism (PE).
  
  
  METHODS
  Emergency physicians, radiology residents, and thoracic radiologists evaluated 123 computed tomography pulmonary angiography images. Interobserver agreement was analysed using kappa statistics.
  
  
  RESULTS
  Very good agreements were observed between thoracic radiologists and radiology residents (0.81 and 0.82). Fair and moderate agreements (0.39 and 0.42) were demonstrated between emergency physicians and thoracic radiologists.
  
  
  CONCLUSIONS
  Important differences in interobserver agreement were found, with emergency physicians tending to overdiagnose PE.
authors.affiliation: Medical Imaging Research Lab, Federal University of Health Sciences of Porto Alegre, Porto Alegre, 90020-090, Brazil.
authors.forename: Bruno
authors.initials: B
authors.lastname: Hochhegger
authors.affiliation: Post-graduation Program in Medicine (Radiology) at the Federal University of Rio de Janeiro, 21941-901, Brazil. Electronic address: grtalves@gmail.com.
authors.forename: Giordano R T
authors.initials: GRT
authors.lastname: Alves
authors.affiliation: Divison of Pulmonary Medicine, Santa Casa Healthcare Complex of Porto Alegre, Porto Alegre, 90020-090, Brazil.
authors.forename: Marcus
authors.initials: M
authors.lastname: Chaves
authors.affiliation: Divison of Pulmonary Medicine, Santa Casa Healthcare Complex of Porto Alegre, Porto Alegre, 90020-090, Brazil.
authors.forename: Ana Luiza
authors.initials: AL
authors.lastname: Moreira
authors.affiliation: Medical Imaging Research Lab, Federal University of Health Sciences of Porto Alegre, Porto Alegre, 90020-090, Brazil.
authors.forename: Renato
authors.initials: R
authors.lastname: Kist
authors.affiliation: Medical Imaging Research Lab, Federal University of Health Sciences of Porto Alegre, Porto Alegre, 90020-090, Brazil.
authors.forename: Guilherme
authors.initials: G
authors.lastname: Watte
authors.affiliation: Divison of Pulmonary Medicine, Santa Casa Healthcare Complex of Porto Alegre, Porto Alegre, 90020-090, Brazil.
authors.forename: José S
authors.initials: JS
authors.lastname: Moreira
authors.affiliation: Department of Radiology, Liverpool Heart and Chest Hospital NHS Foundation Trust, Liverpool, L14 3PE, UK.
authors.forename: Klaus L
authors.initials: KL
authors.lastname: Irion
authors.affiliation: Department of Radiology, Federal University of Rio de Janeiro, Rio de Janeiro, 21941-901, Brazil.
authors.forename: Edson
authors.initials: E
authors.lastname: Marchiori
mesh_terms: D006801:Humans; D000792:Angiography; D004635:Emergency Medicine / Q000592:standards; D007396:Internship and Residency; D008168:Lung / Q000000981:diagnostic imaging; D015588:Observer Variation; D011655:Pulmonary Embolism / Q000000981:diagnostic imaging; D011857:Radiographic Image Interpretation, Computer-Assisted; D013902:Radiography, Thoracic / Q000592:standards; D011871:Radiology / Q000193:education / Q000592:standards; D012189:Retrospective Studies; D014057:Tomography, X-Ray Computed
keywords: Computed tomography pulmonary angiography; Interobserver agreement; Lung diseases; Pulmonary embolism