title: The role of previous radiographs and reports in the interpretation of current radiographs.
abstract: OBJECTIVE
  The authors studied radiologists' patterns of using old reports and previous radiographs in the interpretation of current radiographic studies. Supplying information from previous studies is considered necessary for accurate interpretation; however, it is not clear how this information is used.
  
  
  METHODS
  Eighteen radiologists interpreted 305 plain-film studies in a general radiologic interpretation area. Radiologists described their perceptions of the use of previous radiographs and reports in film interpretation.
  
  
  RESULTS
  Overall, old films were used for 99% of interpretations and previous reports were used for 65%. Prior information increased confidence in 89% of cases, influenced diagnosis in 56% of cases, and assisted in detecting new pathology in 6% of interpretations. Old radiographs were judged most valuable in documenting the progression, regression, or stability of disease in 89% of cases. Previous reports were principally used to obtain patient history (43%). In no cases did the radiologist perceive that the old reports assisted in locating new pathology.
  
  
  CONCLUSIONS
  Old films are judged more valuable than reports for documenting disease progress, and radiologists are unlikely to accept written reports as a substitute. Previous reports are used principally to improve clinical histories, a function that might be eliminated if adequate clinical data could be captured by other means.
authors.affiliation: Department of Radiology, University of Iowa College of Medicine, Iowa City.
authors.forename: K
authors.initials: K
authors.lastname: White
authors.forename: K
authors.initials: K
authors.lastname: Berbaum
authors.forename: W L
authors.initials: WL
authors.lastname: Smith
mesh_terms: D001291:Attitude of Health Personnel; D006801:Humans; D008499:Medical Records; D011859:Radiography / Q000379:methods*; D011873:Radiology Information Systems