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Application of Ultrasound and Shear Wave Elastography Imaging in a Rat Model of NAFLD/NASH

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Decrease in accumulation of ultrasound contrast microbubbles in non-alcoholic steatohepatitis.

Hiroko Iijima¹, Fuminori Moriyasu, Kaoru Tsuchiya

¹Department of Internal Medicine, Hyogo College of Medicine, Nishinomiya, Hyogo, Japan.

Hepatology Research : the Official Journal of the Japan Society of Hepatology

|June 15, 2007

Summary

Contrast-enhanced ultrasound using Levovist effectively identifies non-alcoholic steatohepatitis (NASH) in patients with fatty liver disease. This method shows high accuracy, offering a valuable non-invasive diagnostic tool for NASH detection.

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In Vitro Modeling of Fat Deposition in Metabolic Dysfunction-Associated Steatotic Liver Disease

In Vitro Modeling of Fat Deposition in Metabolic Dysfunction-Associated Steatotic Liver Disease

Published on: July 19, 2024

Area of Science:

Hepatology
Medical Imaging
Diagnostic Technologies

Background:

Non-alcoholic steatohepatitis (NASH) is a prevalent liver disease in developed nations.
Current NASH diagnosis relies heavily on invasive liver biopsy.
There is a need for accurate, non-invasive diagnostic methods for NASH.

Purpose of the Study:

To evaluate the diagnostic utility of contrast-enhanced ultrasound (CEUS) with Levovist for NASH.
To assess the accuracy of CEUS in differentiating NASH from non-alcoholic fatty liver disease (NAFLD) and healthy controls.
To determine if CEUS findings correlate with histological disease severity.

Main Methods:

Utilized Levovist, an ultrasound contrast agent, intravenously injected into participants.
Liver microbubble accumulation was assessed via ultrasound at multiple time points post-injection.
Quantitative signal intensity measurements and time-intensity curves (TICs) were analyzed in patients with NASH, NAFLD, and healthy volunteers.

Main Results:

CEUS demonstrated a statistically significant decrease in signal intensity in NASH patients compared to NAFLD and healthy groups.
Signal intensity changes did not correlate with histological fibrosis or steatosis.
Receiver operating characteristic (ROC) curve analysis yielded 100% sensitivity and specificity at a signal intensity cut-off of 43.6 at 20 minutes.

Conclusions:

Contrast-enhanced ultrasound with Levovist serves as a valuable screening tool for identifying NASH among individuals with fatty liver.
The technique offers high diagnostic accuracy for NASH detection.
CEUS provides a promising non-invasive alternative for NASH diagnosis.