MRI-based IVIM-modeled diffusion-weighted imaging fails to forecast clinical outcomes in liver disease linked to Fontan procedure: should liver monitoring be implemented?

Overview

This study investigates the prognostic value of MRI-derived IVIM-modeled diffusion-weighted imaging (DWI) in Fontan patients. Findings indicate no significant association between DWI parameters and clinical outcomes.

Background

Fontan-associated liver disease (FALD) is a significant concern for patients post-Fontan palliation, with potential progression to serious conditions such as cirrhosis and hepatocellular carcinoma. Current surveillance methods struggle to differentiate between hepatic congestion and fibrosis. The study explores the utility of IVIM-modelled DWI as a non-invasive assessment tool for FALD.

Data Highlights

Key Findings

• No significant association between IVIM-modelled DWI parameters and clinical outcomes (all p > 0.05).
• 59% of patients experienced the primary endpoint of all-cause mortality or Fontan-related hospitalization during a median follow-up of 9 years.
• IVIM-modelled DWI can distinguish between hepatic congestion and fibrosis.
• Current literature shows limited evidence that FALD surveillance prevents adverse events.

Clinical Implications

The lack of association between IVIM-modelled DWI parameters and clinical outcomes suggests that current monitoring strategies for FALD may not be effective.

Conclusion

While IVIM-modelled DWI provides valuable diagnostic information, it does not correlate with clinical outcomes in FALD.

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