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, Jongchul Park, MiJung Lee, Haesung Yoon

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)14-20
Number of pages7
JournalMedical Ultrasonography
Volume20
Issue number1
DOIs
Publication statusPublished - 2018 Jan 1

Fingerprint

Elasticity Imaging Techniques
fibrosis
liver
Liver Cirrhosis
S waves
stiffness
Elasticity
Transducers
elastic properties
sound waves
impulses
transducers
Ultrasonic Waves
Liver
low speed
tendencies

All Science Journal Classification (ASJC) codes

  • Radiological and Ultrasound Technology
  • Radiology Nuclear Medicine and imaging
  • Acoustics and Ultrasonics

Cite this

Shin, Hyun Joo ; Kim, Myung Joon ; Yoon, Choon Sik ; Lee, Kwanseop ; Lee, Kwan Sik ; Park, Jongchul ; Lee, MiJung ; Yoon, Haesung. / Motion effects on the measurement of stiffness on ultrasound shear wave elastography : A moving liver fibrosis phantom study. In: Medical Ultrasonography. 2018 ; Vol. 20, No. 1. pp. 14-20.
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Motion effects on the measurement of stiffness on ultrasound shear wave elastography : A moving liver fibrosis phantom study. / Shin, Hyun Joo; Kim, Myung Joon; Yoon, Choon Sik; Lee, Kwanseop; Lee, Kwan Sik; Park, Jongchul; Lee, MiJung; Yoon, Haesung.

In: Medical Ultrasonography, Vol. 20, No. 1, 01.01.2018, p. 14-20.

Research output: Contribution to journalArticle

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T1 - Motion effects on the measurement of stiffness on ultrasound shear wave elastography

T2 - A moving liver fibrosis phantom study

AU - Shin, Hyun Joo

AU - Kim, Myung Joon

AU - Yoon, Choon Sik

AU - Lee, Kwanseop

AU - Lee, Kwan Sik

AU - Park, Jongchul

AU - Lee, MiJung

AU - Yoon, Haesung

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N2 - 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.

AB - 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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