Diffusion-weighted imaging (b value = 1500 s/mm2) is useful to decrease false-positive breast cancer cases due to fibrocystic changes

Miho Ochi, Toshiro Kuroiwa, Shunya Sunami, Junji Murakami, Shinichiro Miyahara, Takashi Nagaie, Masafumi Oya, Hidetake Yabuuchi, Masamitsu Hatakenaka

研究成果: Contribution to journalArticle査読

21 被引用数 (Scopus)

抄録

Background: We aimed to evaluate the application of apparent diffusion coefficient (ADC) values calculated from diffusion-weighted imaging (DWI) (b value = 1500 s/mm2) in the breast imaging reporting and data system (BI-RADS). Methods: For 104 cases of breast lesions with definitive histology diagnosis (45 benign cases, 59 malignant cases) in which breast magnetic resonance imaging was performed, ADC values were compared between benign and malignant cases, between ductal carcinoma in situ (DCIS) and fibrocystic changes, and between DCIS and ductal hyperplasia (one type of fibrocystic change). Diagnostic accuracy was compared for a total of 101 images and for 34 images including only nine DCIS and 25 fibrocystic changes between BI-RADS alone (with categories 4a, 4b, and 5 defined as malignancies) and BI-RADS plus ADC. Results: There were significant differences in mean ADC values between malignant and benign cases (p < 0.0001) and between DCIS and fibrocystic changes (p < 0.002), but not between DCIS and ductal hyperplasia. Positive predictive values were significantly greater for BI-RADS plus ADC than for BI-RADS alone in all cases (70.5% for BI-RADS alone, 81.3% for BI-RADS plus ADC) and in cases of DCIS versus fibrocystic changes (40.9% for BI-RADS alone, 64.3% for BI-RADS plus ADC), resulting in a significant improvement in diagnostic accuracy with the addition of ADC. Conclusion: Adding ADC values calculated from DWI (b value = 1500 s/mm2) to BI-RADS is a useful way to improve differential diagnostic accuracy for malignant tumors and benign lesions, especially for DCIS versus fibrocystic changes, except in cases of ductal hyperplasia.

本文言語英語
ページ(範囲)137-144
ページ数8
ジャーナルBreast Cancer
20
2
DOI
出版ステータス出版済み - 4 2013

All Science Journal Classification (ASJC) codes

  • Oncology
  • Radiology Nuclear Medicine and imaging
  • Pharmacology (medical)

フィンガープリント 「Diffusion-weighted imaging (b value = 1500 s/mm<sup>2</sup>) is useful to decrease false-positive breast cancer cases due to fibrocystic changes」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル