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Interconversion of elasticity measurements between two-dimensional shear wave elastography and transient elastography

Authors
 Yeun-Yoon Kim  ;  Myung-Joon Kim  ;  Hyun Joo Shin  ;  Haesung Yoon  ;  Ha Yan Kim  ;  Mi-Jung Lee 
Citation
 Medical Ultrasonography, Vol.20(2) : 127-133, 2018 
Journal Title
 Medical Ultrasonography 
ISSN
 1844-4172 
Issue Date
2018
Abstract
AIMS: To enable comparison and interconversion of elasticity measurements between two-dimensional (2D) shear wave elastography (SWE) and transient elastography (TE). MATERIALS AND METHODS: Elasticities of three phantoms were measured by 2D SWE (supersonic shear imaging) using four probes and TE using two probes. We performed regression analyses to evaluate correlation between the measurements and phantom elasticities, and make converting equations. In pediatric biliary atresia patients who had stiffness measurements by both 2D SWE and TE within 1-year interval, TE measurements were retrospectively converted into correlating 2D SWE values. We compared the calculated values with 2D SWE measurements by intraclass correlation coefficient. RESULTS: Measurements in phantoms varied according to elastography method and probe selection. However, the measurement by both 2D SWE (R2, 0.974-0.985; p<0.001) and TE (R2, 0.996-0.999; p<0.001) showedsignificant linear correlation with phantom elasticity in all probe settings. From 67 biliary atresia patients (age, 2 months-20 years), agreements between the measured and calculated values were excellent in all 88 examinations within 1-year interval(rho=0.828; p<0.001) and in 63 examinations within 2-month interval (rho=0.863, p<0.001). CONCLUSIONS: The equations enabledinterconversion of elasticity values among different probes of 2D SWE and TE and provided reliable estimation of elasticityvalues for different probe settings in biliary atresia patients.
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/162344
Files in This Item:
T201801409.pdf Download
DOI
10.11152/mu-1307
Appears in Collections:
1. Journal Papers (연구논문) > 1. College of Medicine (의과대학) > Dept. of Radiology (영상의학교실)
1. Journal Papers (연구논문) > 1. College of Medicine (의과대학) > Yonsei Biomedical Research Center (연세의생명연구원)
Yonsei Authors
김명준(Kim, Myung Joon) ORCID logo https://orcid.org/0000-0002-4608-0275
김연윤(Kim, Yeun-Yoon) ORCID logo https://orcid.org/0000-0003-2018-5332
김하얀(Kim, Ha Yan)
신현주(Shin, Hyun Joo) ORCID logo https://orcid.org/0000-0002-7462-2609
윤혜성(Yoon, Haesung) ORCID logo https://orcid.org/0000-0003-0581-8656
이미정(Lee, Mi-Jung) ORCID logo https://orcid.org/0000-0003-3244-9171
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