Ultrasound is a type of ultrasound technology known clinically as b-mode ultrasound. b-ultrasound diagnosis is performed by using grayscale modulation to display the sound beam to scan the body’s cross-sectional surface and obtain a sonogram for clinical disease diagnosis. There are two types of ultrasound beam scanning: sector scanning and linear scanning. b-ultrasound mainly uses the echoes of tissue interfaces to convey information about the anatomical patterns and anatomical structures of human tissues and organs. b-ultrasound diagnosis is made by analyzing the sonograms of human body sections. Because human tissues and organs have different echogenic intensities and different degrees of acoustic attenuation. For example, urine, bile or cystic fluid in the human body has a very low level of acoustic attenuation, so the performance on the sonogram is very low echogenicity; bones, calcification and lungs in the human body have a high level of acoustic attenuation, so the performance on the sonogram is strong echogenicity; while brain tissue, liver, heart, muscle, kidney and other organs in the human body have a medium level of acoustic attenuation, so the performance on the sonogram is medium echogenicity. The performance is moderately echogenic. Therefore, the performance of each organ on the sonogram has its own special pattern, and each lesion has different sonogram characteristics, which are the diagnostic basis of b ultrasound. As an auxiliary diagnostic method, ultrasound can easily produce some artifacts due to the influence of the patient, the machine and other external factors, so there are also misdiagnosis and leakage.