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Pediatric Radiology

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01.05.2013 | Original Article

Acoustic radiation force impulse imaging—normal values of liver stiffness in healthy children

verfasst von: Sylviane Hanquinet, Delphine Courvoisier, Aikaterini Kanavaki, Amira Dhouib, Mehrak Anooshiravani

Erschienen in: Pediatric Radiology | Ausgabe 5/2013

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Abstract

Background

Acoustic radiation force impulse imaging (ARFI) is a recent ultrasound technique to assess tissue stiffness.

Objective

Our aim was to describe the feasibility and to define normal ARFI values in liver in children.

Materials and methods

ARFI values were measured in 103 children (ages 2 weeks to 17 years) divided into four age groups, at a minimum depth of 3 cm. In 20 children, measurements were done at 3-, 4- and 5-cm depth in the liver to assess the suitability of measurement location. The impact of age groups and of depth groups was examined using multilevel models. The precision of the measurements was determined using intraclass correlation coefficient (ICC).

Results

There was no statistical difference between measurements taken at different ages, with a mean propagation velocity of 1.12 m/s (range: 0.73 to 1.45 m/s). There was no significant difference according to the depth of the regions of interest (up to 5 cm). The ICC was 0.77 (95% CI 0.69–0.83).

Conclusion

ARFI is feasible in children at any age with an acceptable reliability. The depth of measurements in the liver seems to have no influence on test results. We set the standard ARFI elastography values for healthy liver in children.

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Titel: Acoustic radiation force impulse imaging—normal values of liver stiffness in healthy children
verfasst von: Sylviane Hanquinet
Delphine Courvoisier
Aikaterini Kanavaki
Amira Dhouib
Mehrak Anooshiravani
Publikationsdatum: 01.05.2013
Verlag: Springer-Verlag
Erschienen in: Pediatric Radiology / Ausgabe 5/2013
Print ISSN: 0301-0449
Elektronische ISSN: 1432-1998
DOI: https://doi.org/10.1007/s00247-012-2553-5

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Springer Medizin

Acoustic radiation force impulse imaging—normal values of liver stiffness in healthy children

Abstract

Background

Objective

Materials and methods

Results

Conclusion

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Springer Medizin

Abstract

Background

Objective

Materials and methods

Results

Conclusion

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