1.Abdominal ultrasound examination is generally carried out in the morning on an empty stomach (except in special circumstances);

2. Liver, gallbladder, biliary tract and pancreas ultrasound examination the night before the light diet, the day need to be fasting, fasting and water; patients with abdominal flatulence, the first three days of the test began fasting fat, protein, beans and other gas-producing food.

3. the Bladder, ureter, prostate, uterus and accessories, early pregnancy (within 3 months of pregnancy) and other B-ultrasound before the examination, you need to keep the bladder urine, you can drink about 800 ml two hours before the test, after the bladder is filled, check .