European Radiology

, Volume 17, Issue 5, pp 1365–1371

Detection of masses and microcalcifications of breast cancer on digital mammograms: comparison among hard-copy film, 3-megapixel liquid crystal display (LCD) monitors and 5-megapixel LCD monitors: an observer performance study

  • Takeshi Kamitani
  • Hidetake Yabuuchi
  • Hiroyasu Soeda
  • Yoshio Matsuo
  • Takashi Okafuji
  • Shuji Sakai
  • Akio Furuya
  • Masamitsu Hatakenaka
  • Nobuhide Ishii
  • Hiroshi Honda
Breast

DOI: 10.1007/s00330-006-0452-6

Cite this article as:
Kamitani, T., Yabuuchi, H., Soeda, H. et al. Eur Radiol (2007) 17: 1365. doi:10.1007/s00330-006-0452-6

Abstract

The purpose of the study was to compare observer performance in the detection of masses and microcalcifications of breast cancer among hard-copy reading and soft-copy readings using 3-megapixel (3M) and 5-megapixel (5M) liquid crystal display (LCD) monitors. For the microcalcification detection test, we prepared 100 mammograms: 40 surgically verified cancer cases and 60 normal cases. For the mass detection test, we prepared 100 mammograms: 50 cancer cases and 50 normal cases. After six readers assessed both microcalcifications and masses set for each modality, receiver operating characteristic (ROC) analysis was performed. The average Azs for mass detection using a hard copy and 3M and 5M LCD monitors were 0.923, 0.927 and 0.920, respectively; there were no significant differences. The average Az for microcalcification detection using hard copy, 3M and 5M LCD monitors was 0.977, 0.954 and 0.972, respectively. There were no significant differences, but the P-values between the hard copy and 3M LCD monitor and that between the 3M and 5M LCD monitor were 0.08 and 0.09, respectively. In conclusion, the observer performances for detecting masses of breast cancers were comparable among the hard copy and two LCD monitors; however, soft-copy reading with a 3M LCD monitor showed slightly lower observer performance for detecting microcalcifications of breast cancers than hard-copy or 5M LCD monitor reading.

Keywords

Breast radiographyRadiographyDigitalImagesDisplayDiagnostic radiologyObserver performance

Copyright information

© Springer-Verlag 2006

Authors and Affiliations

  • Takeshi Kamitani
    • 1
  • Hidetake Yabuuchi
    • 1
  • Hiroyasu Soeda
    • 1
  • Yoshio Matsuo
    • 1
  • Takashi Okafuji
    • 1
  • Shuji Sakai
    • 2
  • Akio Furuya
    • 3
  • Masamitsu Hatakenaka
    • 1
  • Nobuhide Ishii
    • 4
  • Hiroshi Honda
    • 1
  1. 1.Department of Clinical Radiology, Graduate School of Medical SciencesKyushu UniversityFukuokaJapan
  2. 2.Department of Health Sciences, School of MedicineKyushu UniversityFukuokaJapan
  3. 3.Department of RadiologyNational Fukuoka-Higashi Medical CenterKogaJapan
  4. 4.Fuji Film Medical Co., LtdFukuokaJapan