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A Three-Dimensional Digital Model for Early Diagnosis of Hepatic Fibrosis Based on Magnetic Resonance Elastography
Published on: July 21, 2023
Is it better to use two elastographic methods for liver fibrosis assessment?
Ioan Sporea1, Roxana Şirli, Alina Popescu
1Department of Gastroenterology and Hepatology, University of Medicine and Pharmacy Timişoara, 10 Iosif Bulbuca Bv. 300736 Timisoara, Romania. isporea@umft.ro
World Journal of Gastroenterology
|October 12, 2011
Summary
Combining acoustic radiation force impulse (ARFI) and transient elastography (TE) improves fibrosis prediction in chronic hepatitis C. Concordant results allow avoiding liver biopsy when predicting significant fibrosis.
Area of Science:
- Hepatology
- Medical Imaging
- Diagnostic Techniques
Background:
- Chronic hepatitis C poses a significant global health challenge, necessitating accurate fibrosis staging for effective management.
- Liver biopsy, the traditional gold standard for fibrosis assessment, is invasive and carries potential complications.
- Non-invasive elastographic methods offer promising alternatives for evaluating liver fibrosis.
Purpose of the Study:
- To evaluate the combined diagnostic performance of acoustic radiation force impulse (ARFI) elastography and transient elastography (TE) for predicting liver fibrosis in chronic hepatitis C patients.
- To determine if combining these ultrasound-based elastographic techniques enhances the accuracy of fibrosis staging compared to individual methods.
- To assess the potential of concordant elastographic findings to obviate the need for liver biopsy.
Main Methods:
- A cohort of 197 patients with chronic hepatitis C underwent simultaneous liver stiffness measurements using TE and ARFI.
- Liver biopsy (LB) was performed and scored using the Metavir system to establish the ground truth for fibrosis staging.
- Median TE (kPa) and ARFI (m/s) values were calculated from reliable measurements (IQR < 30%, SR ≥ 60%).
Main Results:
- Both TE and ARFI demonstrated strong correlations with liver biopsy fibrosis scores (r=0.741 for TE, r=0.730 for ARFI).
- For significant fibrosis (F≥2), combined TE and ARFI achieved 93.3% specificity and 68% accuracy.
- For cirrhosis (F=4), combined TE and ARFI achieved 94.4% specificity, 91.8% accuracy, and 94.4% negative predictive value.
Conclusions:
- The combination of TE and ARFI elastography demonstrates high specificity and accuracy in predicting significant fibrosis and cirrhosis in chronic hepatitis C.
- When results from TE and ARFI are concordant, these non-invasive methods can reliably predict fibrosis stages, potentially avoiding the need for liver biopsy.
- This combined approach offers a valuable non-invasive tool for managing patients with chronic hepatitis C.
