Magnetic Resonance Imaging Applications in Liver Fibrosis Assessment
Summary
Liver fibrosis, a hallmark of chronic liver disease, has traditionally been staged by invasive biopsy, but magnetic resonance imaging (MRI) offers a suite of non-invasive approaches to characterise tissue architecture, perfusion and molecular mobility. Techniques such as diffusion-weighted imaging (DWI) quantify the random motion of water molecules, while advanced models of intravoxel incoherent motion (IVIM) separate pure molecular diffusion from microvascular perfusion. Contrast-enhanced protocols using hepatocyte-specific agents reveal functional impairment through alterations in uptake and excretion kinetics. Developments in T1ρ and elastography sequences further enable the quantification of macromolecular and mechanical properties of fibrotic tissue. Collectively, these MRI applications permit early detection, accurate staging and longitudinal monitoring of fibrosis progression or regression under therapy, supporting personalised management and reducing reliance on biopsy.
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Magnetic Resonance Imaging Applications in Liver Fibrosis Assessment publication trend
The graph below shows the total number of articles in magnetic resonance imaging applications in liver fibrosis assessment across all publications each year (not limited to Nature Index journals).
Technical terms
Diffusion-weighted imaging (DWI): MRI technique that measures the Brownian motion of water molecules within tissue.
Intravoxel incoherent motion (IVIM): Bi-exponential model in DWI distinguishing pure molecular diffusion from microvascular perfusion effects.
Apparent diffusion coefficient (ADC): Quantitative value reflecting the overall diffusion within a voxel, combining diffusion and perfusion components.
Perfusion fraction (f): Component of IVIM representing the proportion of signal arising from microvascular blood flow.
Gadoxetic acid-enhanced MRI: Contrast-enhanced protocol using a hepatocyte-specific agent to assess liver function and fibrotic change.
Bayesian fitting: Statistical parameter-estimation method that incorporates prior information to improve the accuracy of diffusion model parameters under noisy conditions.
References
- Comparison between Intravoxel Incoherent Motion and Splenic Volumetry to Predict Hepatic Fibrosis Staging in Preoperative Patients. Diagnostics (2023).
- Diffusion‐Weighted MRI of the Liver in Patients With Chronic Liver Disease: A Comparative Study Between Different Fitting Approaches and Diffusion Models. Journal of Magnetic Resonance Imaging (2023).
- Histogram Analysis of Gadoxetic Acid-Enhanced MRI for Quantitative Hepatic Fibrosis Measurement. PLOS ONE (2014).
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