The full-digital color Doppler ultrasound produced by Ruihua Medical in China 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 be used to 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. In addition, ultrasound can also be used in the musculoskeletal system recently, and can be used to check sports injuries of the musculoskeletal system, such as rheumatic immune diseases, etc. Color Doppler ultrasound can also check the peripheral blood vessels throughout the body to see if the blood vessels are narrowed, occluded, or have thrombi, etc. Therefore, ultrasound can examine a wide range of areas and is widely used in ultrasound rooms in major hospitals, gynecology, obstetrics, pediatrics, operating rooms, ICU monitoring, wards, spinal pain departments, varicose veins, breast departments, limb blood vessels, thyroid, male organs, gynecological uterine appendages and other full-body examinations.