What can liver ultrasound detect?

When many people have liver problems, they need to go to the hospital for a color ultrasound examination. The color ultrasound examination of the liver mainly checks the damage standard within the liver and the current state of the liver. It is judged based on liver function indicators. These are all very important. You must pay attention to them in normal times. Liver function tests should be done once a year. Don't wait until symptoms occur to do it.

Basic Projects

(1) Indicators reflecting liver parenchymal damage

It mainly includes alanine aminotransferase (ALT), aspartate aminotransferase (AST), etc. Among them, ALT is the most commonly used sensitive indicator. When 1% of liver cells are necrotic, the serum ALT level can increase by 1 times. Continuous increase in AST and values ​​exceeding ALT often indicate severe liver parenchymal damage and is a sign of increasing chronicity.

(2) Indicators reflecting bilirubin metabolism and cholestasis

It mainly includes total bilirubin (TBil), direct and indirect bilirubin, urinary bilirubin, urobilinogen, blood bile acid (TBA), γ-glutamyl transpeptidase (γ-GT) and alkaline phosphatase (ALP). The above indicators may increase when there is hepatocyte degeneration and necrosis, bilirubin metabolism disorder or intrahepatic cholestasis. In hemolytic jaundice, elevated indirect bilirubin may occur.

(3) Indicators reflecting liver synthesis function

It mainly includes albumin, prealbumin, cholesterol lipase, prothrombin time and activity, etc. When albumin and cholesterol lipase are reduced for a long time and prothrombin activity decreases, and vitamin K supplementation cannot correct the situation, it means that normal liver cells are gradually decreasing, the liver cells have poor function in synthesizing proteins and coagulation factors, the liver reserve function is reduced, and the prognosis is poor.

(4) Indicators reflecting liver fibrosis

It mainly includes type III procollagen (PⅢP), type IV collagen hyaluronic acid (HA), laminin (LN), etc. These indicators can assist in the diagnosis of liver fibrosis and early cirrhosis.

(5) Detection indicators of liver coagulation function

The liver can synthesize all coagulation factors except factor III and factor a chain, and plays an important role in maintaining normal coagulation function. Patients with liver disease have reduced synthesis of coagulation factors, and clinically they may experience bleeding from the gums and nasal mucosa, ecchymosis of the skin, and in severe cases,

Gastrointestinal bleeding is present. Generally, factor VII appears first and decreases the most, followed by factors II and X, and factor V appears last and decreases the least.

A. Prothrombin time (PT)

The normal value is 11 to 15 seconds, and an extension of more than 3 seconds compared to the normal control is significant. The PT of patients with acute hepatitis and mild chronic hepatitis is normal, while that of patients with severe hepatocellular necrosis and cirrhosis is significantly prolonged. PT is a sensitive indicator for reflecting the degree of liver cell damage and judging prognosis.