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Related Concept Videos

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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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Variability in Liver Size Measurements Using Different View Angles in Ultrasound Imaging.

Jing Gao1, Andrew Flick1, Austin Allen1

  • 1Rocky Vista University, Montana College of Osteopathic Medicine, Billings, Montana, USA.

Journal of Ultrasound in Medicine : Official Journal of the American Institute of Ultrasound in Medicine
|September 9, 2024
PubMed
Summary
This summary is machine-generated.

Ultrasound ultra-wide-view offers the most accurate liver size measurements compared to other views. This method also demonstrates good reliability for both intra-observer and inter-observer assessments in liver imaging.

Keywords:
B‐mode ultrasound imagehepatomegalyliversizeultrasound

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Area of Science:

  • Medical Imaging
  • Radiology
  • Diagnostic Ultrasound

Background:

  • Accurate liver size measurement is crucial for diagnosing various liver conditions.
  • Conventional B-mode ultrasound (US) has limitations in capturing the full liver dimensions.
  • Magnetic resonance imaging (MRI) serves as a reference standard for organ size assessment.

Purpose of the Study:

  • To compare the accuracy of liver size measurements using different conventional B-mode ultrasound (US) field views.
  • To evaluate these measurements against magnetic resonance imaging (MRI) as a reference standard.
  • To assess the reliability of US liver size measurements across different field views.

Main Methods:

  • Three operators measured liver dimensions (sagittal and transverse) using three US field views (90°, 120°, 140°).
  • Statistical analyses included one-way ANOVA for differences across views and Spearman regression for MRI-US correlation.
  • Bland-Altman limits of agreement (LOA) and intraclass correlation coefficient (ICC) were used to assess agreement and reliability.

Main Results:

  • Liver size measurements showed significant differences across the three US field views (P < .001).
  • The ultra-wide-view (140°) demonstrated the highest correlation with MRI measurements (R² = .87 sagittal; R² = .79 transverse).
  • Good agreement was observed between MRI and ultra-wide-view US measurements, with high intra- and inter-observer reliability (ICC = 0.82-0.98).

Conclusions:

  • Ultrasound ultra-wide-view provides the most accurate liver size measurements among the tested conventional B-mode US field views.
  • The ultra-wide-view US technique exhibits good intra- and inter-operator reliability for liver size assessment.
  • This advanced US view can be a valuable tool in clinical practice for liver evaluation.