title: Memory for previously viewed radiographs and the effect of prior knowledge of memory task.
abstract: OBJECTIVE
  To investigate the effect of being forewarned that they would be asked to identify repeated images on radiologists' recognition of previously interpreted versus new chest radiographs.
  
  
  METHODS
  Thirteen radiologists viewed 60 posterior-anterior chest radiographs, 31 with and 29 without nodules, in two sets of 40 images each. Eight radiologists were forewarned and five radiologists were not forewarned of the memory task. Twenty images in each of the two sets were unique to each set and 20 images occurred in both sets. The readers indicated the presence or absence of any nodules during both readings, and in the second reading session they also indicated whether they thought each image had also occurred in the first reading.
  
  
  RESULTS
  There was no significant difference in recognition memory performance between forewarned and not-forewarned readers. Overall accuracy in distinguishing previously-viewed from new images was 60.7%.
  
  
  CONCLUSIONS
  Being forewarned of the memory task did not improve recognition memory.
authors.affiliation: The University of Texas, MD Anderson Cancer Center, Division of Diagnostic Radiology, Musculoskeletal Imaging, 1515 Holcombe Blvd, Unit 1475, Houston, TX 77030. Electronic address: Tamara.Haygood@mdanderson.org.
authors.forename: Tamara Miner
authors.initials: TM
authors.lastname: Haygood
authors.forename: Mary Ashley
authors.initials: MA
authors.lastname: Qing Liu
authors.forename: Eva M
authors.initials: EM
authors.lastname: Galvan
authors.forename: Roland
authors.initials: R
authors.lastname: Bassett
authors.forename: Catherine
authors.initials: C
authors.lastname: Devine
authors.forename: Elizabeth
authors.initials: E
authors.lastname: Lano
authors.forename: Chitra
authors.initials: C
authors.lastname: Viswanathan
authors.forename: Edith M
authors.initials: EM
authors.lastname: Marom
mesh_terms: D002983:Clinical Competence / Q000706:statistics & numerical data*; D005260:Female; D006801:Humans; D008175:Lung Neoplasms / Q000000981:diagnostic imaging*; D008297:Male; D008568:Memory / Q000502:physiology*; D008875:Middle Aged; D015588:Observer Variation; D012372:ROC Curve; D021641:Recognition, Psychology / Q000502:physiology*; D003074:Solitary Pulmonary Nodule / Q000000981:diagnostic imaging*; D013647:Task Performance and Analysis; D014057:Tomography, X-Ray Computed / Q000379:methods
keywords: Recognition memory; chest radiography; observer performance