1. Apply a certain amount of gel to the probe, and then gently attach the probe to the lower edge of the patient's right rib to keep the probe perpendicular to the skin.

2, press the switch of the probe, start the instrument for testing, in the process of testing, patients need to keep breathing smoothly, don't talk or move the body.

3. Observe the liver hardness value on the instrument and record it.

4. Repeat the above steps to detect the patient's left liver to compare the hardness difference between the two livers.