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Related Concept Videos

Ultrasound II: Endoscopic Ultrasound and FibroScan01:25

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Endoscopic Ultrasound (EUS) and FibroScan are valuable diagnostic tools in gastroenterology and hepatology, each with specific applications and techniques.
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Related Experiment Video

Updated: Sep 6, 2025

Author Spotlight: A Non-Invasive Tool to Assess and Differentiate Fat Patterns in Liver Using 3D Dixon MRI
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Interobserver Variability in Ultrasound-Based Liver Fat Quantification.

Halit Nahit Şendur1, Mahi Nur Cerit1, Nemat Ibrahimkhanli1

  • 1Department of Radiology, Gazi University Faculty of Medicine, Mevlana Bulvarı No:29 06560 Yenimahalle, Ankara, Turkey.

Journal of Ultrasound in Medicine : Official Journal of the American Institute of Ultrasound in Medicine
|July 2, 2022
PubMed
Summary

Quantitative ultrasound (QUS) techniques, including tissue attenuation imaging (TAI) and tissue scatter distribution imaging (TSI), demonstrate excellent reproducibility for assessing liver fat content. These methods require minimal additional time, making them suitable for clinical practice.

Keywords:
fatty liverhepatosteatosisinterobserver variabilityquantitative ultrasoundtissue attenuation imagingtissue scatter distribution imaging

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Area of Science:

  • Medical Imaging
  • Hepatology
  • Diagnostic Ultrasound

Background:

  • Nonalcoholic fatty liver disease (NAFLD) is a growing health concern.
  • Accurate assessment of liver fat content is crucial for diagnosis and management.
  • Quantitative ultrasound (QUS) offers a non-invasive approach to liver fat quantification.

Purpose of the Study:

  • To evaluate the interobserver variability of QUS techniques for liver fat measurement.
  • To determine the time efficiency of QUS methods in clinical settings.
  • To assess the reproducibility of tissue attenuation imaging (TAI) and tissue scatter distribution imaging (TSI).

Main Methods:

  • A prospective study included 100 patients with suspected NAFLD.
  • Two independent, blinded observers performed TAI and TSI measurements.
  • Hepatic steatosis was also assessed visually, and QUS measurements were correlated with visual grades.

Main Results:

  • Excellent interobserver agreement was found for both TAI (ICC: 0.970) and TSI (ICC: 0.938).
  • TAI and TSI measurements showed high reproducibility between observers.
  • The mean time required for TAI and TSI was under 60 seconds per technique.

Conclusions:

  • TAI and TSI are highly reproducible QUS techniques for liver fat assessment.
  • These QUS methods can be readily integrated into daily clinical practice.
  • The minimal time requirement supports the feasibility of routine QUS implementation.