The differences between breast ultrasonography and breast ultrasound include different examination principles, examination methods, and examination accuracy. 1. Principle of examination: Breast ultrasonography uses a contrast agent to enhance the backscattered echoes to determine whether there are any abnormal lesions in the breast. Breast ultrasound uses the Doppler effect for color coding, and then creates a color image that shows whether there is any abnormality in the breast. 2. Examination method: For breast ultrasonography, ultrasonic contrast agent is pushed into the patient’s body, so it is necessary to establish a venous channel before the examination. While for breast ultrasound examination, the ultrasound probe is used to touch the patient’s breast skin for examination, so it is painless and non-invasive. 3. Examination accuracy: In comparison, breast ultrasonography is more sensitive and can show the microcirculation perfusion in organs and tumors through ultrasonography, so ultrasonography is more accurate in diagnosing lesions, and breast ultrasonography is relatively less accurate. If there are any abnormal symptoms in the breast, it is recommended to consult a doctor in time and follow the doctor’s instructions to carry out the relevant examinations.