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Motion artifacts, lesion type, and parenchymal enhancement in breast MRI: what does really influence diagnostic

Paola Clauser1, Matthias Dietzel2, Michael Weber1

  • 11 Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, Austria.

Acta Radiologica (Stockholm, Sweden : 1987)
|April 19, 2018
PubMed
Abstract

Insights

Motion artifacts can affect breast MRI quality, but lesion type and size are key factors influencing diagnostic accuracy. Understanding these elements improves breast cancer detection and characterization.

Area of Science:

  • Radiology
  • Medical Imaging
  • Oncology

Background:

  • Motion artifacts are a known issue in breast MRI, potentially degrading image quality.
  • Limited data exists on how these artifacts impact diagnostic accuracy for breast lesions.

Purpose of the Study:

  • To investigate the influence of motion artifacts and other factors on diagnostic performance in breast MRI.
  • Evaluated factors include fibroglandular tissue, background parenchymal enhancement, lesion size, and lesion type.

Main Methods:

  • Retrospective analysis of 334 breast lesions (139 benign, 195 malignant) from 320 patients.
  • Two expert radiologists assessed images for motion artifacts, lesion characteristics, and BI-RADS scores.
  • Statistical analysis (univariate and multivariate) identified factors affecting sensitivity, specificity, and accuracy.

Main Results:

  • Sensitivity, specificity, and accuracy ranged from 93.8% to 95.4%, 83.4% to 87.8%, and 89.8% to 91.9%, respectively.
  • Increased motion artifacts, non-mass lesions, and small lesion size (≤10 mm) significantly reduced sensitivity.
  • Multivariate analysis confirmed lesion type and size as independent predictors of diagnostic performance.

Conclusions:

  • Motion artifacts can negatively impact breast MRI lesion characterization.
  • Lesion type and small size are the most significant factors influencing diagnostic estimates in breast MRI.
Keywords:
Breastartifactscross-sectional studiesmagnetic resonance imagingsensitivityspecificity

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