Ultrasound of Hepatic - Elastography Liver Stiffness Elastography

What Is Liver Stiffness Elastography?

Liver stiffness elastography (also called shear wave elastography) is a specialized, non-invasive imaging test that uses high-frequency sound waves to measure how stiff or elastic your liver tissue is. Unlike a traditional liver biopsy, this test does not require any needles, contrast dye, or exposure to radiation, and carries no risk of claustrophobia. The test works by sending safe shear sound waves through your liver, and measuring how quickly those waves travel through the tissue: stiffer tissue (which indicates scarring or fibrosis) makes the waves travel faster, while healthy, soft liver tissue slows the waves down.

Clinical Uses for Gastrointestinal and Liver Conditions

This test is ordered to evaluate and monitor a wide range of liver and gastrointestinal system conditions, including: diagnosing and grading the severity of liver fibrosis caused by chronic hepatitis B or C, non-alcoholic fatty liver disease (NAFLD), or alcoholic liver disease; monitoring how well treatment for liver disease is working; detecting early signs of cirrhosis (advanced, irreversible liver scarring); and evaluating liver health in people with chronic gastrointestinal conditions like inflammatory bowel disease, celiac disease, or autoimmune hepatitis that can damage the liver over time. It is also often used to screen for liver damage in people taking medications that may impact liver function as a side effect.

How to Prepare for Your Test

You will need to fast for 6 full hours before your appointment, which means no food, drinks (including water, coffee, juice, gum, or candy), or medications unless your healthcare provider has explicitly told you it is safe to take a small sip of water with your dose. Wear loose, comfortable clothing that allows easy access to your upper abdomen, and avoid applying lotions, oils, body powder, or fragranced products to your abdomen on the day of the test, as these can interfere with image quality.

What to Expect During the Test

The entire test takes approximately 30 minutes to complete, and you will lie on an exam table on your back for the duration. A clear, water-based gel will be applied to your upper abdomen, and a small handheld device called a transducer will be pressed gently against your skin to capture images and measure liver stiffness. The test is completely painless, has no side effects, and does not require you to hold your breath for long periods, though you may be asked to take a few short breaths during image capture to get clear measurements.

After Your Test

You can eat, drink, and resume all normal activities immediately after the test is finished, as there is no recovery time required and no side effects from the procedure. Your healthcare provider will review your test results with you at a follow-up appointment, and the liver stiffness measurements will be used to determine if you have liver fibrosis, how advanced any scarring is, and what next steps for treatment or monitoring may be needed.