Liver echogenicity: measurement or visual grading?

Area of Science:

• Radiology
• Medical Imaging
• Hepatology

Background:

• Liver echogenicity assessment is crucial for diagnosing fatty liver disease.
• Current methods include visual grading and quantitative measurements.
• Comparing these methods is essential for accurate diagnosis.

Purpose of the Study:

• To compare two methods for assessing liver echogenicity: computerized measurement and visual grading by experts.
• To determine which method correlates better with risk factors for fatty liver and liver enzyme levels.

Main Methods:

• Liver/kidney echogenicity ratio was measured using ultrasound software in 41 individuals.
• Two radiologists and one radiographer visually graded liver echogenicity.
• Echogenicity data were correlated with fatty liver risk factors and liver enzyme levels.

Main Results:

• Radiologists' visual grades showed the strongest correlation with determinants of fatty liver (explaining 55% of variance).
• The radiographer's grades and measured echogenicity ratios showed weaker correlations (14% and 31%, respectively).

Conclusions:

• Visual grading by experienced radiologists is superior to computerized measurements for assessing liver echogenicity.
• Computerized methods may lack the comprehensive tissue diagnostics provided by expert visual assessment.
• This highlights the importance of experienced human interpretation in ultrasound-based liver diagnostics.