Journal
ULTRASOUND IN MEDICINE AND BIOLOGY
Volume 46, Issue 4, Pages 981-991Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.ultrasmedbio.2019.12.017
Keywords
Breast neoplasms; Ultrasonography; Shear wave elastography; Strain elastography; Reproducibility
Funding
- National Natural Science Foundation of China [81471669]
- Study Project of the Collaborative Innovation Center for Translational Medicine at Shanghai Jiao Tong University School of Medicine [TM201618]
- Shanghai Municipal Health and Family Planning Commission project [20174 Y0069]
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The objective of this study was to evaluate the inter-operator reproducibility of strain elastography (SE) and shear wave elastography (SWE) in three groups: all lesions, benign lesions and malignant lesions. Ninety-one lesions from ninety-one women were examined by SE and SWE from January 2017 to December 2017 by two radiologists. The reproducibility of elastic score, SE strain ratio and SWE Young's modulus between operators was prospectively evaluated. There was good agreement on elasticity score, with k values of 0.711, 0.640 and 0.766. The intra-class correlation coefficients of the strain ratio, mean elastic modulus (E-mean), maximum elastic modulus (E-max) and elastic modulus standard deviation (E-sd) ranged from 0.723-0.876, which indicated good and excellent agreement. We concluded that both SE and SWE had good reproducibility among different operators using the same probe in the same ultrasound instrument. Strain elasticity score was more consistent among operators in malignant breast tumors. There was better agreement on strain elastic ratio and shear wave elasticity among operators in benign breast lesions. (E-mail: zhousu30@126.com) (C) 2019 World Federation for Ultrasound in Medicine & Biology. All rights reserved.
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