Attenuation Based Quantitative Evaluation of Hepatic Steatosis Using US: Current Status and Future Perspective

Area of Science:

• Hepatology
• Medical Imaging
• Diagnostic Ultrasound

Background:

• Hepatic steatosis is a hallmark of metabolic dysfunction-associated steatotic liver disease, potentially progressing to cirrhosis.
• Early and accurate assessment of hepatic steatosis is vital for patient management.
• Grayscale ultrasound (US) is limited by subjectivity and reduced sensitivity in mild cases.

Purpose of the Study:

• To review the principles and recent advancements in attenuation-based quantitative ultrasound techniques for hepatic steatosis assessment.
• To explore the potential of these newer methods in overcoming the limitations of traditional grayscale US.
• To discuss future directions, including multiparametric approaches for predicting disease progression.

Main Methods:

• Review of current literature on attenuation-based quantitative US techniques for hepatic steatosis.
• Comparison of novel two-dimensional attenuation-based methods with grayscale US and controlled attenuation parameter.
• Examination of diagnostic accuracy, reproducibility, and standardization needs.

Main Results:

• Two-dimensional attenuation-based US techniques demonstrate high diagnostic accuracy and reproducibility for quantifying hepatic steatosis.
• These methods address limitations of grayscale US, offering improved sensitivity and objectivity.
• Standardization of examination protocols is essential for enhancing precision and reducing variability.

Conclusions:

• Attenuation-based quantitative US techniques represent a significant advancement in assessing hepatic steatosis.
• Further research into multiparametric approaches combining these techniques with elastography is warranted for predicting disease progression.
• Standardization is key to maximizing the clinical utility of these quantitative US methods.