Portable Color Doppler Ultrasound Machine for Abdomen(MDK-680) It is mainly used in liver and kidney, but it has certain auxiliary diagnostic value for distinguishing benign and malignant lesions in abdominal cavity, gallbladder cancer from large polyps, chronic and severe inflammation, and the difference between common bile duct and hepatic artery. Color ultrasound can be used to determine the size of the lumen, the speed and direction of the internal flow and the establishment of collateral circulation in liver cirrhosis. For nodular sclerosis and diffuse liver cancer, which are extremely difficult to distinguish between black and white, it can facilitate the differential diagnosis by high-frequency exploration and blood flow spectrum exploration. For the differential diagnosis of benign and malignant hepatic space occupying lesions, cysts and various arteriovenous tumors have better diagnostic value. Primary liver cancer and secondary liver cancer can also be disting…