Significance of resistive index in color doppler ultrasonogram: Differentiation between benign and malignant breast masses

Hye Young Choi, Hyae Young Kim, Seoung Yeon Baek, Buhng Chul Kang, Sun Wha Lee

Research output: Contribution to journalArticlepeer-review

32 Scopus citations

Abstract

The objective of this article is to evaluate the significance of resistive index in differentiation between benign and malignant breast lesions on duplex ultrasonographic examination. Resistive indices obtained in 106 breast lesions of 104 patients were included. Sixty-four were benign (mean age: 32.4 ± 11.1 years), and 42 were malignant lesions (mean age: 47.8 ± 11.4 years). The resistive index was classified as follows: below 0.49, from 0.5 to 0.59, 0.6 to 0.69, 0.7 to 0.79, and above 0.8. We analyzed and defined the optimal threshold value of RI between benign and malignant lesions. The mean values of the RI of benign and malignant lesions were 0.62 ± 0.095 (range 0.44-0.86) and 0.74 ± 0.097 (range, 0.50-0.92), respectively. The resistive index exceeded 0.7 in 80% of malignant lesions. The difference of the RI between malignant and benign lesions was statistically significant when the threshold value was 0.7 (P < 0.001). A resistive index over 0.7 may suggest malignant lesions. Due to the considerable overlap of the range of the RI, it may not be diagnostic in any single patient; however, it may be helpful in conjunct with gray-scale image. Copyright (C) 2000 Elsevier Science Inc.

Original languageEnglish
Pages (from-to)284-288
Number of pages5
JournalClinical Imaging
Volume23
Issue number5
DOIs
StatePublished - Sep 1999

Bibliographical note

Funding Information:
Supported by Ewha Womans University Mok-Dory Hospital Foundation.

Keywords

  • Breast, neoplasm
  • Breast, ultrasonography
  • Doppler ultrasonography

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