Elastography of background liver in patients with focal hepatic lesions undergoing Triple Phase CT and its correlation with LI-RADS

Main Article Content

Dr. Vagisha Dahiya
Dr. Subhendu Mohanty
Dr. Rupanshi Jain
Dr. Khemendra Kumar

Keywords

Elastography, LI-RADS, focal hepatic lesions, liver stiffness, triple-phase CT

Abstract

Differentiating between benign and malignant focal hepatic lesions in patients with chronic liver disease is critical for appropriate management. While imaging modalities such as triple-phase Computed Tomography (CT) and the Liver Imaging Reporting and Data System (LI-RADS) provide structured approaches for lesion characterization, they primarily focus on lesion morphology and enhancement patterns, often overlooking the role of the background liver parenchyma. Background liver stiffness assessment using elastography may provide additional insights in lesion characterization, particularly in cases where lesion enhancement patterns are atypical due to cirrhosis-related perfusion changes. This study evaluates the correlation between elastography-derived liver stiffness measurements and LI-RADS categorization of focal hepatic lesions identified on triple-phase CT.


Results: The majority of patients were in the 50–69 year age group (55.77%), with males comprising 61.54% of the study population. Liver stiffness values increased progressively with higher LI-RADS categories, with LR-TIV lesions exhibiting the highest mean stiffness (19.72 kPa). Spearman’s rank correlation demonstrated a strong positive relationship between LI-RADS categories and liver stiffness measurements (ρ = 0.79, p = 0.036). In addition, a Chi-square test for association showed a statistically significant relationship between categorized liver stiffness levels and LI-RADS categories (χ² = 36.15, p = 0.00031).


Conclusion: Elastography-derived liver stiffness correlates significantly with LI-RADS categorization, supporting its use as an adjunctive biomarker for focal hepatic lesion assessment. Integrating elastography with LI-RADS classification enhances diagnostic accuracy and may reduce the need for invasive biopsies. Further studies are warranted for validation in larger cohorts.

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