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European Radiology

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26.01.2016 | Ultrasound

Comparison of shear wave velocities on ultrasound elastography between different machines, transducers, and acquisition depths: a phantom study

verfasst von: Hyun Joo Shin, Myung-Joon Kim, Ha Yan Kim, Yun Ho Roh, Mi-Jung Lee

Erschienen in: European Radiology | Ausgabe 10/2016

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Abstract

Objectives

To investigate consistency in shear wave velocities (SWVs) on ultrasound elastography using different machines, transducers and acquisition depths.

Methods

The SWVs were measured using an elasticity phantom with a Young’s modulus of 16.9 kPa, with three recently introduced ultrasound elastography machines (A, B and C from different vendors) and two transducers (low and high frequencies) at four depths (2, 3, 4 and 5 cm). Mean SWVs from 15 measurements and coefficient of variations (CVs) were compared between three machines, two transducers and four acquisition depths.

Results

The SWVs using the high frequency transducer were not acquired at 5 cm depth in machine B, and a high frequency transducer was not available in machine C. The mean SWVs in the three machines were different (p ≤ 0.002). The CVs were 0–0.09 in three machines. The mean SWVs between the two transducers were different (p < 0.001) except at 4 and 5 cm depths in machine A. The SWVs were affected by the acquisition depths in all conditions (p < 0.001).

Conclusion

There is considerable difference in SWVs on ultrasound elastography depending on different machines, transducers and acquisition depths. Caution is needed when using the cutoff values of SWVs in different conditions.

Key Points

• The shear wave velocities (SWVs) are different between different ultrasound elastography machines

• The SWVs are also different between different transducers and acquisition depths

• Caution is needed when using the cutoff SWVs measured under different conditions

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Titel: Comparison of shear wave velocities on ultrasound elastography between different machines, transducers, and acquisition depths: a phantom study
verfasst von: Hyun Joo Shin
Myung-Joon Kim
Ha Yan Kim
Yun Ho Roh
Mi-Jung Lee
Publikationsdatum: 26.01.2016
Verlag: Springer Berlin Heidelberg
Erschienen in: European Radiology / Ausgabe 10/2016
Print ISSN: 0938-7994
Elektronische ISSN: 1432-1084
DOI: https://doi.org/10.1007/s00330-016-4212-y

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Comparison of shear wave velocities on ultrasound elastography between different machines, transducers, and acquisition depths: a phantom study

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Methods

Results

Conclusion

Key Points

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