The difference between Doppler and ultrasound lies in their purpose and functionality. A standard ultrasound uses high-frequency sound waves to create images of internal organs, tissues, and structures inside the body. It is commonly used in pregnancy scans, abdominal imaging, thyroid evaluation, and musculoskeletal assessments to visualize structure and anatomy.Doppler ultrasound, on the other hand, is a specialized type of ultrasound that focuses specifically on measuring blood flow within arteries and veins. Instead of just showing images of organs, it evaluates the movement, speed, and direction of blood circulation. This makes Doppler ultrasound essential for diagnosing conditions such as deep vein thrombosis (DVT), blocked arteries, varicose veins, and peripheral artery disease. In simple terms, regular ultrasound shows body structures, while Doppler ultrasound shows how blood flows through blood vessels.