Korean Journal of Radiology

  • 제20권2호
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  • Pages.218-224
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  • 2019
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  • 1229-6929(pISSN)
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  • 2005-8330(eISSN)
대한영상의학회 (The Korean Society of Radiology)
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Interpretive Performance and Inter-Observer Agreement on Digital Mammography Test Sets

  • Kim, Sung Hun (Department of Radiology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea) ;
  • Lee, Eun Hye (Department of Radiology, Soonchunhyang University Hospital Bucheon, Soonchunhyang University College of Medicine) ;
  • Jun, Jae Kwan (National Cancer Control Institute, National Cancer Center) ;
  • Kim, You Me (Department of Radiology, Dankook University Hospital, Dankook University College of Medicine) ;
  • Chang, Yun-Woo (Department of Radiology, Soonchunhyang University Hospital, Soonchunhyang University College of Medicine) ;
  • Lee, Jin Hwa (Department of Radiology, Dong-A University Hospital) ;
  • Kim, Hye-Won (Department of Radiology, Wonkwang University Hospital, Wonkwang University School of Medicine) ;
  • Choi, Eun Jung (Department of Radiology, Chonbuk National University Hospital)
  • 투고 : 2018.03.28
  • 심사 : 2018.10.09
  • 발행 : 2019.02.01
⟨ 이전 논문 다음 논문 ⟩

초록

Objective: To evaluate the interpretive performance and inter-observer agreement on digital mammographs among radiologists and to investigate whether radiologist characteristics affect performance and agreement. Materials and Methods: The test sets consisted of full-field digital mammograms and contained 12 cancer cases among 1000 total cases. Twelve radiologists independently interpreted all mammograms. Performance indicators included the recall rate, cancer detection rate (CDR), positive predictive value (PPV), sensitivity, specificity, false positive rate (FPR), and area under the receiver operating characteristic curve (AUC). Inter-radiologist agreement was measured. The reporting radiologist characteristics included number of years of experience interpreting mammography, fellowship training in breast imaging, and annual volume of mammography interpretation. Results: The mean and range of interpretive performance were as follows: recall rate, 7.5% (3.3-10.2%); CDR, 10.6 (8.0-12.0 per 1000 examinations); PPV, 15.9% (8.8-33.3%); sensitivity, 88.2% (66.7-100%); specificity, 93.5% (90.6-97.8%); FPR, 6.5% (2.2-9.4%); and AUC, 0.93 (0.82-0.99). Radiologists who annually interpreted more than 3000 screening mammograms tended to exhibit higher CDRs and sensitivities than those who interpreted fewer than 3000 mammograms (p = 0.064). The inter-radiologist agreement showed a percent agreement of 77.2-88.8% and a kappa value of 0.27-0.34. Radiologist characteristics did not affect agreement. Conclusion: The interpretative performance of the radiologists fulfilled the mammography screening goal of the American College of Radiology, although there was inter-observer variability. Radiologists who interpreted more than 3000 screening mammograms annually tended to perform better than radiologists who did not.

키워드

과제정보

We would like to thank Seung Hoon Song and Hye-Mi Jo for data collection and management.

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