Ultrasound Attenuation Imaging Tracks Hepatic Steatosis

Attenuation imaging increased with visually graded steatosis severity in pediatric patients, but findings were not validated against MRI-PDFF or biopsy.

By
Kathryn Wighton
May 11, 2026
4 min

Conexiant

Overview

This study demonstrates that ultrasound-based attenuation imaging values increase with the severity of hepatic steatosis in pediatric patients with overweight or obesity. The findings suggest a strong association between attenuation imaging values and steatosis grade, although validation against MRI or histology is lacking.

Background

Hepatic steatosis is a significant concern in pediatric populations, particularly among those with obesity, as it can lead to serious liver-related complications. Non-invasive imaging techniques, such as ultrasound attenuation imaging, offer a promising alternative to traditional biopsy methods for assessing liver fat content. Understanding the relationship between ultrasound attenuation values and steatosis severity is crucial for improving diagnostic accuracy and patient management.

Data Highlights

Group	Median Attenuation Imaging Value (dB/cm/MHz)
Healthy-weight controls	0.51
Children with overweight	0.54
Children with obesity	0.64
No steatosis	0.53
Mild steatosis	0.77
Moderate steatosis	0.85
Severe steatosis	0.89

Key Findings

Attenuation imaging values increased stepwise with steatosis severity.
Median values were 0.51 dB/cm/MHz in healthy-weight controls and 0.64 dB/cm/MHz in children with obesity.
Strong correlation between attenuation imaging values and steatosis grade (η² = 0.626).
No significant correlation between attenuation imaging values and sex.
Attenuation imaging values correlated with several metabolic measures, particularly alanine aminotransferase.
Findings are limited by the lack of validation against MRI-PDFF or histology.

Clinical Implications

Clinicians should consider ultrasound-based attenuation imaging as a potential tool for assessing hepatic steatosis in pediatric patients with obesity. However, the lack of validation against more established methods necessitates cautious interpretation of results. Future multicenter studies are essential to establish standardized protocols and enhance the clinical utility of this imaging technique.