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2016 | 16 | 66 | 281–287
Article title

Shear wave elastography with a new reliability indicator

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Title variants
PL
Elastografia fali poprzecznej z nowym wskaźnikiem wiarygodności
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Abstracts
EN
Non-invasive methods for liver stiffness assessment have been introduced over recent years. Of these, two main methods for estimating liver fibrosis using ultrasound elastography have become established in clinical practice: shear wave elastography and quasi-static or strain elastography. Shear waves are waves with a motion perpendicular (lateral) to the direction of the generating force. Shear waves travel relatively slowly (between 1 and 10 m/s). The stiffness of the liver tissue can be assessed based on shear wave velocity (the stiffness increases with the speed). The European Federation of Societies for Ultrasound in Medicine and Biology has published Guidelines and Recommendations that describe these technologies and provide recommendations for their clinical use. Most of the data available to date has been published using the Fibroscan (Echosens, France), point shear wave speed measurement using an acoustic radiation force impulse (Siemens, Germany) and 2D shear wave elastography using the Aixplorer (SuperSonic Imagine, France). More recently, also other manufacturers have introduced shear wave elastography technology into the market. A comparison of data obtained using different techniques for shear wave propagation and velocity measurement is of key interest for future studies, recommendations and guidelines. Here, we present a recently introduced shear wave elastography technology from Hitachi and discuss its reproducibility and comparability to the already established technologies.
PL
W ostatnich latach pojawiły się nowe nieinwazyjne metody oceny sztywności wątroby. Dwie główne spośród tych metod znalazły zastosowanie w praktyce klinicznej do elastosonograficznej oceny włóknienia wątroby: elastografia fali poprzecznej oraz elastografia quasi-statyczna/ odkształceń względnych. Fale poprzeczne to fale o ruchu prostopadłym (lateralnym) do kierunku siły wzbudzającej. Fale poprzeczne przemieszczają się stosunkowo wolno (od 1 do 10 m/s). Sztywność tkanki wątroby można oceniać na podstawie szybkości fali poprzecznej (sztywność wzrasta proporcjonalnie do szybkości). Europejska Federacja Towarzystw Ultrasonograficznych w Medycynie i Biologii (The European Federation of Societies for Ultrasound in Medicine and Biology) wydała wytyczne zawierające opis tych technologii oraz zalecenia dotyczące ich klinicznego stosowania. Dotychczas większość dostępnych danych uzyskiwano z wykorzystaniem aparatury FibroScan (Echosens, Francja), punktowego pomiaru szybkości fali poprzecznej przy użyciu silnego impulsu akustycznego (Siemens, Niemcy) oraz elastografii fali poprzecznej z zastosowaniem aparatu Aixplorer (SuperSonic Imagine, Francja). W ostatnim czasie również inni producenci wprowadzili na rynek technologię elastografii fali poprzecznej. Porównanie danych uzyskanych z zastosowaniem różnych nietechnik propagacji fali poprzecznej oraz pomiaru jej szybkości ma kluczowe znaczenie dla przyszłych badań, zaleceń oraz wytycznych. W niniejszej pracy przedstawiono niedawno wprowadzoną technologię elastografii fali poprzecznej (Hitachi) oraz omówiono jej powtarzalność i porównywalność względem dotychczas stosowanych technologii.
Discipline
Publisher

Year
Volume
16
Issue
66
Pages
281–287
Physical description
Contributors
author
  • Department of Ultrasound, Zhongshan Hospital, Fudan University, 200032 Shanghai, China
References
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Document Type
review
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.psjd-548479b6-7948-4036-b8f5-2b4908fc7c93
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