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Motion effects on the measurement of stiffness on ultrasound shear wave elastography: a moving liver fibrosis phantom study

 Hyun Joo Shin  ;  Myung-Joon Kim  ;  Choon-Sik Yoon  ;  Kwanseop Lee  ;  Kwan Sik Lee  ;  Jong-Chul Park  ;  Mi-Jung Lee  ;  Haesung Yoon 
 Medical Ultrasonography, Vol.1(1) : 14-20, 2018 
Journal Title
 Medical Ultrasonography 
Issue Date
AIMS: To evaluate the differences between shear wave velocities (SWVs) measured with ultrasound elastography during the continuous motion using liver fibrosis phantoms. MATERIALS AND METHODS: Elasticities were measured with convex and linear transducers of supersonic shear wave imaging (SSI) and acoustic radiation force impulse imaging (ARFI) using liver elasticity phantoms (3.0 and 16.9 kPa) at depths of 2, 3, 4, and 5 cm. Motion velocities were 30 and 60 rpm with the phantoms in an upright position on the Orbital shaker. To simulate different directional motion, the phantoms were laid on their side on the shaker. The values between moving and static status were compared, and the number of measurement failure was counted. Results: In SSI, the convex transducer was less affected by motion at 30 rpm with the 3 kPa phantom. In the higher velocity motion and in the higher stiffness phantom, most values from SSI were different comparing with static status, and there was a tendency for elasticity values to increase during movement. In ARFI, there were frequent measurement failures without stable results during the motion. CONCLUSIONS: Motion affected the measurement of elasticity differently in SSI and ARFI, according to the velocity, direction of the motion, and phantom stiffness. The convex transducer of SSI was less affected by motion in lower velocity motion and when using normal liver stiffness phantom.
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1. College of Medicine (의과대학) > Dept. of Radiology (영상의학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Medical Engineering (의학공학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Internal Medicine (내과학교실) > 1. Journal Papers
Yonsei Authors
김명준(Kim, Myung Joon) ORCID logo https://orcid.org/0000-0002-4608-0275
박종철(Park, Jong Chul) ORCID logo https://orcid.org/0000-0003-0083-5991
신현주(Shin, Hyun Joo) ORCID logo https://orcid.org/0000-0002-7462-2609
윤춘식(Yoon, Choon Sik) ORCID logo https://orcid.org/0000-0003-2010-6710
윤혜성(Yoon, Haesung) ORCID logo https://orcid.org/0000-0003-0581-8656
이관식(Lee, Kwan Sik) ORCID logo https://orcid.org/0000-0002-3672-1198
이미정(Lee, Mi-Jung) ORCID logo https://orcid.org/0000-0003-3244-9171
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