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Evaluation of thyroid micro-carcinoma using shear wave elastography: Initial experience with qualitative and

Shi Tan1, Peng-Fei Sun2, Heng Xue1

  • 1Department of Ultrasound, Peking University Third Hospital, Beijing, 100191, China.

European Journal of Radiology
|February 26, 2021
PubMed
Summary

Shear wave elastography (SWE) improves thyroid nodule diagnosis by assessing perinodular stiffness, potentially reducing unnecessary fine needle aspirations (FNA) for smaller nodules.

Keywords:
DiagnosisShear wave elastographyThyroid noduleUltrasound

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Area of Science:

  • Medical Imaging
  • Diagnostic Ultrasound
  • Elastography

Background:

  • Thyroid nodules require accurate diagnosis to differentiate benign from malignant conditions.
  • Fine needle aspiration (FNA) is a common diagnostic tool, but can lead to unnecessary procedures for benign nodules.

Purpose of the Study:

  • To evaluate the diagnostic performance of shear wave elastography (SWE) in assessing perinodular stiffness.
  • To determine if SWE can improve the diagnostic accuracy for small thyroid nodules (≤1.0 cm) before FNA.

Main Methods:

  • Retrospective analysis of 69 thyroid nodules in 68 patients.
  • Conventional ultrasound combined with SWE was used to evaluate nodule stiffness.
  • Quantitative SWE features and wave patterns were analyzed.

Main Results:

  • Malignant nodules showed significantly higher maximum elastic modulus (Emax) compared to benign nodules.
  • Perinodular stiffness was greater in malignant nodules based on shear wave patterns.
  • Conventional ultrasound plus SWE reduced the recommendation rate for FNA in benign lesions from 75% to 25%.

Conclusions:

  • SWE provides valuable quantitative and qualitative data for thyroid nodule assessment.
  • Integrating SWE with conventional ultrasound can decrease unnecessary FNA procedures for thyroid nodules.