Diagnostic medical sonogramUltrasound evaluation of the liver utilizes normal sonographic appearance of the parenchyma as the baseline to determine presence of disease.

Liver sonograms assess the overall size, border contour, gray scale appearance of the parenchyma including the bile ducts and blood vessels within the organ.  Acute and chronic liver disease can be identified by changes to the sonographic appearance of these assessed areas of the liver.

Identification and monitoring of Hepatocellular diseases such as Hepatitis and Cirrhosis can be accomplished with sonography. It is estimated that in Latin America and the Caribbean 2.1 million people are Infected with Hepatitis B and 4.1 million are infected with Hepatitis C.

Chronic Hepatitis and Cirrhosis lead to a decrease in the overall size of the liver, the borders become lobulated rather than smooth, the hepaticytes becomes fibrotic which changes the gray scale appearance of the parenchyma, and the blood flow to and within the liver can reverse direction.

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Additional Resources

PAHO Web. Hepatitis