Original Jpn J Radiol Technol 2000 ;
Comparison of Doctors' Readings with Results of CAD System Detection
in Mammography

DAISUKE FUKUOKA,TAKESHI HARA,1) TOKIKO ENDO,2) NORIMITSU SHINOHARA,1) HIROSHI FUJITA,1)
MITSURU IKEDA,3) TOYOHIRO OHTA,4)
and HITOSHI YOSHIMURA 5)
Department of Electrical and Computer Engineering,Gifu National College of Technology
1) Department of Information Science,Faculty of Engineering,Gifu University
2) Department of Radiology,National Hospital of Nagoya
3) Department of Medical Information,Nagoya University Hospital
4) Department of Radiology,Nagoya University School of Medicine
5) MI System Department,Medical &Graphic Company,Konica Corporation
Received Nov. 16, 1999; Revision accepted Jan. 11, 2000; Code No. 532
Summary
We have been developing a computer-aided diagnosis(CAD)system for mammograms and have reported our evaluation studies. The purpose of this study was to evaluate the potential effectiveness of the system in detecting mammographic cancers in terms of mass and clustered microcalcifications by comparing the performance of 40 doctors and the CAD system in evaluating 340 mammograms, and also employing ROC analysis by a radiologist as a preliminary study. We found that our CAD system could be useful if physicians take account of its results in their interpretation, because our CAD system detected candidates missed by some doctors. These results imply that our CAD system has potential usefulness for improving the accuracy of diagnosis in mammography.
Key words: Breast cancer, Computer-aided diagnosis(CAD), Receiver operating characteristic(ROC)analysis