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Interobserver Variability Between Breast Imagers Using the Fifth Edition of the BI-RADS MRI Lexicon.

Publication ,  Journal Article
Grimm, LJ; Anderson, AL; Baker, JA; Johnson, KS; Walsh, R; Yoon, SC; Ghate, SV
Published in: AJR Am J Roentgenol
May 2015

OBJECTIVE: The purpose of this study was to assess the interobserver variability of users of the MRI lexicon in the fifth edition of the BI-RADS atlas. MATERIALS AND METHODS: Three breast imaging specialists reviewed 280 routine clinical breast MRI findings reported as BI-RADS category 3. Lesions reported as BI-RADS 3 were chosen because variability in the use of BI-RADS descriptors may influence which lesions are classified as probably benign. Each blinded reader reviewed every study and recorded breast features (background parenchymal enhancement) and lesion features (lesion morphology, mass shape, mass margin, mass internal enhancement, nonmass enhancement distribution, nonmass enhancement internal enhancement, enhancement kinetics) according to the fifth edition of the BI-RADS lexicon and provided a final BI-RADS assessment. Interobserver variability was calculated for each breast and lesion feature and for the final BI-RADS assessment. RESULTS: Interobserver variability for background parenchymal enhancement was fair (ĸ = 0.28). There was moderate agreement on lesion morphology (ĸ = 0.53). For masses, there was substantial agreement on shape (ĸ = 0.72), margin (ĸ = 0.78), and internal enhancement (ĸ = 0.69). For nonmass enhancement, there was substantial agreement on distribution (ĸ = 0.69) and internal enhancement (ĸ = 0.62). There was slight agreement on lesion kinetics (ĸ = 0.19) and final BI-RADS assessment (ĸ = 0.11). CONCLUSION: There is moderate to substantial agreement on most MRI BI-RADS lesion morphology descriptors, particularly mass and nonmass enhancement features, which are important predictors of malignancy. Considerable disagreement remains, however, among experienced readers whether to follow particular findings.

Duke Scholars

Published In

AJR Am J Roentgenol

DOI

EISSN

1546-3141

Publication Date

May 2015

Volume

204

Issue

5

Start / End Page

1120 / 1124

Location

United States

Related Subject Headings

  • Retrospective Studies
  • Organometallic Compounds
  • Observer Variation
  • Nuclear Medicine & Medical Imaging
  • Meglumine
  • Magnetic Resonance Imaging
  • Humans
  • Female
  • Contrast Media
  • Breast Neoplasms
 

Citation

APA
Chicago
ICMJE
MLA
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Grimm, L. J., Anderson, A. L., Baker, J. A., Johnson, K. S., Walsh, R., Yoon, S. C., & Ghate, S. V. (2015). Interobserver Variability Between Breast Imagers Using the Fifth Edition of the BI-RADS MRI Lexicon. AJR Am J Roentgenol, 204(5), 1120–1124. https://doi.org/10.2214/AJR.14.13047
Grimm, Lars J., Andy L. Anderson, Jay A. Baker, Karen S. Johnson, Ruth Walsh, Sora C. Yoon, and Sujata V. Ghate. “Interobserver Variability Between Breast Imagers Using the Fifth Edition of the BI-RADS MRI Lexicon.AJR Am J Roentgenol 204, no. 5 (May 2015): 1120–24. https://doi.org/10.2214/AJR.14.13047.
Grimm LJ, Anderson AL, Baker JA, Johnson KS, Walsh R, Yoon SC, et al. Interobserver Variability Between Breast Imagers Using the Fifth Edition of the BI-RADS MRI Lexicon. AJR Am J Roentgenol. 2015 May;204(5):1120–4.
Grimm, Lars J., et al. “Interobserver Variability Between Breast Imagers Using the Fifth Edition of the BI-RADS MRI Lexicon.AJR Am J Roentgenol, vol. 204, no. 5, May 2015, pp. 1120–24. Pubmed, doi:10.2214/AJR.14.13047.
Grimm LJ, Anderson AL, Baker JA, Johnson KS, Walsh R, Yoon SC, Ghate SV. Interobserver Variability Between Breast Imagers Using the Fifth Edition of the BI-RADS MRI Lexicon. AJR Am J Roentgenol. 2015 May;204(5):1120–1124.

Published In

AJR Am J Roentgenol

DOI

EISSN

1546-3141

Publication Date

May 2015

Volume

204

Issue

5

Start / End Page

1120 / 1124

Location

United States

Related Subject Headings

  • Retrospective Studies
  • Organometallic Compounds
  • Observer Variation
  • Nuclear Medicine & Medical Imaging
  • Meglumine
  • Magnetic Resonance Imaging
  • Humans
  • Female
  • Contrast Media
  • Breast Neoplasms