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Value of the Strain Ratio on Ultrasonic Elastography for Differentiation of Benign and Malignant Soft Tissue Tumors

Authors
 Seok Hahn  ;  Young Han Lee  ;  Seung Hyun Lee  ;  Jin-Suck Suh 
Citation
 JOURNAL OF ULTRASOUND IN MEDICINE, Vol.36(1) : 121-127, 2017 
Journal Title
JOURNAL OF ULTRASOUND IN MEDICINE
ISSN
 0278-4297 
Issue Date
2017
MeSH
Adolescent ; Adult ; Aged ; Child ; Child, Preschool ; Diagnosis, Differential ; Elasticity Imaging Techniques/methods* ; Female ; Humans ; Male ; Middle Aged ; Reproducibility of Results ; Retrospective Studies ; Sensitivity and Specificity ; Soft Tissue Neoplasms/diagnostic imaging* ; Young Adult
Keywords
elastography ; musculoskeletal ultrasound ; soft tissue tumor ; sonography ; strain ratio
Abstract
OBJECTIVES: The purpose of this study was to evaluate whether the strain ratio provides additional value to conventional visual elasticity scores in the differentiation of benign and malignant soft tissue tumors by ultrasonic elastography.

METHODS: The Institutional Review Board approved the protocol of this retrospective review. Seventy-three patients who underwent elastography and had a soft tissue mass pathologically confirmed by ultrasound-guided core biopsy or surgical excision were enrolled from April 2012 through October 2014. On elastography, elasticity scores were determined with a 5-point visual scale, and the strain ratio to adjacent soft tissue at the same depth was calculated. Tumors were divided into benign and malignant groups according to the pathologic diagnoses. Elasticity scores and strain ratios were compared between benign and malignant groups, and diagnostic performance was evaluated by receiver operating characteristic curves.

RESULTS: Of the 73 patients, 40 had benign tumors, and 33 had malignant tumors. Strain ratios (P = .003) and elasticity scores (P = .048) were significantly different between pathologic results. The areas under the receiver operating characteristic curves were 0.700 (95% confidence interval, 0.581-0.802) for the strain ratio and 0.623 (95% confidence interval, 0.515-0.746) for elastography.

CONCLUSIONS: The strain ratios of malignant soft tissue tumors were lower than those of benign tumors and showed better diagnostic performance than did elasticity scores. The strain ratio can be used as a diagnostic indicator to predict the malignant potential of soft tissue tumors.
Full Text
http://onlinelibrary.wiley.com/doi/10.7863/ultra.16.01054/abstract
DOI
10.7863/ultra.16.01054
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Radiology (영상의학교실) > 1. Journal Papers
Yonsei Authors
Suh, Jin Suck(서진석) ORCID logo https://orcid.org/0000-0001-9455-9240
Lee, Seung Hyun(이승현)
Lee, Young Han(이영한) ORCID logo https://orcid.org/0000-0002-5602-391X
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/154397
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