Shear Wave  Elastography

Shear Wave  Elastography

Shear Wave  Elastography (UGAP) is the newest technique to diagnose liver damage at the earliest in alcoholic as well as non-alcoholic asymptomatic patients. 

Fatty liver is the new epidemic due to fast food and sedentary lifestyle,  now increasingly found in non alcoholic patients. This is called Non-alcoholic fatty steatosis ( NASH).  Various chronic liver diseases such as hepatitis B, C, and fatty liver disease can lead to tissue damage and subsequent fibrosis. As the fibrosis progresses, the liver loses some of its elasticity and becomes stiffer.

How is an Elastography Performed?

Liver elastography involves the use of a surface ultrasound probe that delivers a low-frequency pulse or shear wave to a small volume of liver tissue under the rib cage. The transmission of the sound wave is completely painless. Patients are asked to lie flat on an examination table. A Radiologist places the probe between the ribs on the right side of the lower chest wall. A series of painless pulses are then applied to the liver. The results are recorded on the equipment and an overall liver stiffness score is generated. This score is then interpreted by a qualified radiologist to predict the likelihood of advanced fibrosis or cirrhosis.  Staging of fibrosis and fat quantification by UGAP technique is done.

Patients should be fasting  for a minimum of 3 hours before the test to increase the likelihood of obtaining reliable test results. The scan will take 10 to 15 minutes to complete.