Medically, the liver, gallbladder, pancreas, and spleen of the human body are clinically called liver, gallbladder, pancreas, and spleen. Color Doppler ultrasound examination requires fasting, because it is an abdominal ultrasound examination, and patients are generally asked to fast for more than eight hours before the examination. Most of them start fasting after dinner the day before and go for the examination the next morning. Ultrasound examinations of the liver, gallbladder, pancreas, and spleen have high requirements for the gastrointestinal tract, because the contents and gas in the gastrointestinal tract will affect the examination results, so it is necessary to fast as much as possible. If the patient usually has abdominal distension or severe constipation, he can also do corresponding enema treatment before the examination, which can make the examination conditions better.

The full-digital color Doppler ultrasound produced by the domestic Ruihua Medical manufacturer can check all systems throughout the human body. For example, color Doppler ultrasound in the abdomen can check the liver, gallbladder, pancreas, spleen, kidney, ureter, bladder, adrenal gland, abdominal cavity, retroperitoneal masses, etc. Color Doppler ultrasound in superficial organs can check the thyroid gland, breast lymph nodes, salivary glands (including parotid glands and submandibular glands) for diffuse or space-occupying lesions. In obstetrics and gynecology, color Doppler ultrasound can examine and diagnose gynecological diseases. Full-digital color Doppler ultrasound is also very important in obstetrics. Full-digital four-dimensional color Doppler ultrasound can track the growth and development of the fetus in real time, and detect fetal malformations through four-dimensional color Doppler ultrasound. In terms of the heart, color Doppler ultrasound can examine the structure and function of the heart, and can diagnose congenital or acquired heart diseases, such as congenital heart disease, coronary heart disease, valvular disease, etc.