[Imaging diagnosis for fatty liver: a systematic review]

Area of Science:

• Medical Imaging
• Diagnostic Accuracy
• Hepatology

Background:

• Fatty liver disease is a prevalent condition requiring accurate diagnostic methods.
• Imaging techniques play a crucial role in the diagnosis and screening of fatty liver.
• Assessing the diagnostic performance of imaging tests is essential for clinical decision-making.

Purpose of the Study:

• To systematically evaluate the diagnostic accuracy of imaging tests for fatty liver.
• To provide a basis for selecting appropriate diagnostic and screening tools for fatty liver.
• To analyze the performance of B-mode ultrasound and contrast-enhanced CT in diagnosing fatty liver.

Main Methods:

• Systematic review and meta-analysis of diagnostic test accuracy studies.
• Searches conducted in Chinese Biomedical Database, PubMed, and EMBASE up to November 2002.
• Independent assessment of methodological quality and data extraction from included studies.

Main Results:

• Thirteen studies met eligibility criteria; 10 evaluated B-mode ultrasound, 3 evaluated contrast-enhanced CT.
• For B-mode ultrasound (vs. liver biopsy), pooled sensitivity was 0.89, specificity 0.94, and Q value 0.90.
• For CT (vs. CT), pooled sensitivity was 0.92, specificity 0.88, and Q value 0.90.

Conclusions:

• B-mode ultrasound is an effective imaging modality for fatty liver diagnosis and screening.
• The diagnostic accuracy of imaging tests for fatty liver is generally high.
• Improvements in the methodological quality of diagnostic test studies are recommended.