title: Computer-aided detection system for chest radiography: reducing report turnaround times of examinations with abnormalities.
abstract: BACKGROUND
  The ability to give high priority to examinations with pathological findings could be very useful to radiologists with large work lists who wish to first evaluate the most critical studies. A computer-aided detection (CAD) system for identifying chest examinations with abnormalities has therefore been developed.
  
  
  OBJECTIVE
  To evaluate the effectiveness of a CAD system on report turnaround times of chest examinations with abnormalities.
  
  
  METHODS
  The CAD system was designed to automatically mark chest examinations with possible abnormalities in the work list of radiologists interpreting chest examinations. The system evaluation was performed in two phases: two radiologists interpreted the chest examinations without CAD in phase 1 and with CAD in phase 2. The time information recorded by the radiology information system was then used to calculate the turnaround times. All chest examinations were reviewed by two other radiologists and were divided into normal and abnormal groups. The turnaround times for the examinations with pathological findings with and without the CAD system assistance were compared.
  
  
  RESULTS
  The sensitivity and specificity of the CAD for chest abnormalities were 0.790 and 0.697, respectively, and use of the CAD system decreased the turnaround time for chest examinations with abnormalities by 44%.
  
  
  CONCLUSIONS
  The turnaround times required for radiologists to identify chest examinations with abnormalities could be reduced by using the CAD system. This system could be useful for radiologists with large work lists who wish to first evaluate the most critical studies.
authors.affiliation: Department of Medical Imaging and Radiological Sciences, Kaohsiung Medical University, Kaohsiung, Taiwan tonykao@kmu.edu.tw.
authors.forename: E-Fong
authors.initials: EF
authors.lastname: Kao
authors.affiliation: Department of Medical Imaging, Kaohsiung Medical University Chung-Ho Memorial Hospital, Kaohsiung, Taiwan.
authors.forename: Gin-Chung
authors.initials: GC
authors.lastname: Liu
authors.affiliation: Department of Medical Imaging, Kaohsiung Medical University Chung-Ho Memorial Hospital, Kaohsiung, Taiwan.
authors.forename: Lo-Yeh
authors.initials: LY
authors.lastname: Lee
authors.affiliation: Department of Radiology, St. Joseph Hospital, Kaohsiung, Taiwan.
authors.forename: Huei-Yi
authors.initials: HY
authors.lastname: Tsai
authors.affiliation: Department of Medical Imaging, Kaohsiung Medical University Chung-Ho Memorial Hospital, Kaohsiung, Taiwan.
authors.forename: Twei-Shiun
authors.initials: TS
authors.lastname: Jaw
mesh_terms: D006801:Humans; D011857:Radiographic Image Interpretation, Computer-Assisted; D013902:Radiography, Thoracic / Q000379:methods*; D011873:Radiology Information Systems; D013997:Time Factors
keywords: Computer-aided detection; chest radiograph; radiology information system; turnaround time