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MR Elastography for Liver Fibrosis Assessment

Non-invasive quantitative MRI technique using mechanical shear waves induced by passive driver to measure liver tissue stiffness in kilopascals (kPa) for accurate detection and staging of liver fibrosis from F0 to F4 with diagnostic accuracy approaching 95% as alternative to liver biopsy.

Written by: Saygı Hospital Health Guide Editorial Board
Last updated:

This content has been compiled by the Saygı Hospital Health Guide Editorial Board and is periodically reviewed by a specialist physician.

References (5)

This content is for informational purposes only and does not constitute medical advice. You can book an appointment at our Radyoloji department. Book Appointment →

What is MR Elastography for Liver Fibrosis Assessment?

MR elastography (MRE) is a non-invasive quantitative MRI technique that measures liver tissue stiffness by applying low-frequency mechanical shear waves (40-100 Hz) through a passive driver placed on the right upper quadrant.

The induced shear wave propagation is captured using phase-contrast MRI with motion-encoding gradients, generating elastograms color-coded for tissue stiffness expressed in kilopascals (kPa). Modern 3T systems with 3D MRE provide superior accuracy and reduced acquisition time.

Diagnostic thresholds: F0-F1 (no/mild fibrosis) <2.93 kPa, F2 (significant fibrosis) 2.93-3.55 kPa, F3 (advanced fibrosis) 3.55-4.62 kPa, F4 (cirrhosis) >4.62 kPa. AUC ranges 0.94-0.98 for F2-F4, surpassing FibroScan transient elastography (AUC 0.85-0.93) and serum biomarkers.

Symptoms

Chronic hepatitis B or C virus infection
Non-alcoholic fatty liver disease (NAFLD) or NASH
Alcoholic liver disease
Autoimmune hepatitis or primary biliary cholangitis
Hemochromatosis or Wilson disease
Suspected cirrhosis with portal hypertension
Post-transplant liver graft assessment
Hepatocellular carcinoma surveillance candidate identification

Risk Factors

Chronic viral hepatitis (HBV, HCV)
Metabolic syndrome and obesity (BMI >30)
Type 2 diabetes mellitus
Significant alcohol consumption (>30g/day men, >20g/day women)
Family history of liver disease or hereditary hemochromatosis
Long-term hepatotoxic medication use
Autoimmune liver disease
Persistently elevated liver enzymes

When to See a Doctor?

If you experience any of the following symptoms, seek medical attention promptly:

  • Chronic liver disease requiring fibrosis staging
  • NAFLD with elevated FIB-4 score or fibrosis biomarkers
  • Treatment monitoring in chronic hepatitis B/C
  • Cirrhosis screening before HCC surveillance entry
  • Discrepant results between FibroScan and serum biomarkers
  • Failed FibroScan due to obesity or ascites
  • Pre-transplant evaluation
  • Response monitoring after antiviral or anti-NASH therapy

Treatment Methods

01
Patient preparation: fasting 4-6 hours, MR safety screening
02
Passive driver placement on right upper quadrant abdomen with gel coupling
03
Active driver generates 40-100 Hz mechanical waves transmitted through passive driver
04
Phase-contrast MRI sequence with motion-encoding gradients in three orthogonal directions
05
2D or 3D MRE acquisition during breath-hold (15-30 seconds, 4 slices typically)
06
Reconstruction algorithm calculates tissue stiffness maps (elastograms) in kPa
07
ROI placement on elastograms by radiologist avoiding artifacts and large vessels
08
Quantitative reporting: median stiffness, fibrosis stage estimation
09
Combined evaluation with multiparametric MRI (PDFF for steatosis, T2* for iron)
10
Clinical correlation with serum markers (FIB-4, NFS, ELF) and patient risk factors

Which Department to Visit?

You can visit our Radyoloji department for these complaints. Our specialist physicians will create the most suitable treatment plan for you.

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Health Disclaimer: The information on this page is prepared for general informational purposes only. It does not replace medical diagnosis and treatment. Please consult your physician for your complaints. Saygı Hospital does not accept responsibility for actions taken based on the information on this page.