Medical checkups are becoming more and more important in daily life, as they can detect hidden health problems or existing health problems in time and promote health improvement through lifestyle improvement. For example, blood glucose and lipid tests can detect diabetes and hyperlipidemia in a timely manner, and ultrasound examinations of the liver and gallbladder can detect liver cancer, cirrhosis, gallbladder polyps and gallbladder stones in a timely manner. Lung CT examination can detect emphysema and lung cancer in a timely manner, so medical checkups are becoming more and more important to people and are usually performed at least once a year.