The content of the digestive tract may obscure the picture of organs, so it is advisable to refrain from eating for about 6 hours before the examination. In addition, in the period of 2 days before the examination, heavy and flatulent meals should be avoided. The day before the abdominal ultrasound examination, it is recommended to take an intestinal gas reducing agent (eg Espumisan), because their excess may also make diagnostics difficult.