Diagnostic performance of dual-energy contrast-enhanced subtracted mammography in dense breasts compared to mammography alone: interobserver blind-reading analysis

Yun Chung Cheung*, Yu Ching Lin, Yung Liang Wan, Kee-Min Yeow, Pei Chin Huang, Yung Feng Lo, Hsiu Pei Tsai, Shir Hwa Ueng, Chee Jen Chang

*Corresponding author for this work

Research output: Contribution to journalJournal Article peer-review

156 Scopus citations

Abstract

Purpose: To analyse the accuracy of dual-energy contrast-enhanced spectral mammography in dense breasts in comparison with contrast-enhanced subtracted mammography (CESM) and conventional mammography (Mx).

Materials and methods: CESM cases of dense breasts with histological proof were evaluated in the present study. Four radiologists with varying experience in mammography interpretation blindly read Mx first, followed by CESM. The diagnostic profiles, consistency and learning curve were analysed statistically.

Results: One hundred lesions (28 benign and 72 breast malignancies) in 89 females were analysed. Use of CESM improved the cancer diagnosis by 21.2 % in sensitivity (71.5 % to 92.7 %), by 16.1 % in specificity (51.8 % to 67.9 %) and by 19.8 % in accuracy (65.9 % to 85.8 %) compared with Mx. The interobserver diagnostic consistency was markedly higher using CESM than using Mx alone (0.6235 vs. 0.3869 using the kappa ratio). The probability of a correct prediction was elevated from 80 % to 90 % after 75 consecutive case readings.

Conclusion: CESM provided additional information with consistent improvement of the cancer diagnosis in dense breasts compared to Mx alone. The prediction of the diagnosis could be improved by the interpretation of a significant number of cases in the presence of 6 % benign contrast enhancement in this study.

Original languageEnglish
Pages (from-to)2394-2403
Number of pages10
JournalEuropean Radiology
Volume24
Issue number10
DOIs
StatePublished - 10 2014

Bibliographical note

Publisher Copyright:
© 2014, European Society of Radiology.

Keywords

  • Breast
  • Breast cancer diagnosis
  • Contrast-enhanced subtracted mammography
  • Dual-energy contrast-enhanced spectral mammography
  • Mammography
  • Observer-blind study

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