A Medical Ultrasound System with circular formation elements placement ultrasonic transducer. Each element of transducer generates the ultrasonic signal to human or animal body. Receiving signal from the transducer elements on same circle is directly connected and summed. The summed signal of each element circle is independently delayed by the digital controlled delay and then summed by the adder. The final summed signal after the adder is sent to Post Processing Unit. Post Processing Unit processes the final summed signal for the medical diagnosis, and the beam line is from the center of the circular plane of the transducer elements formation and perpendicular to this plane. The ultrasonic transducer has MEMS based motion sensors: accelerometer-sensors and gyro-sensors built in. The MEMS based motion sensors send the real-time transducer location and angle information to Post Processing Unit. In PW Mode, Post Processing Unit detects and calculates the direction of blood vessel by finding the center of largest distribution area of non-zero magnitude of Doppler shift frequency on the Beam line, the blood vessel direction and angle are known. The physical blood flow speed in the blood vessel is automatically calculated by the measured Doppler shift frequency and the angle between the direction of the blood vessel and the direction of the transducer beam line. In B Mode, Post Processing Unit is splicing the beam lines by the location and angle information from the MEMS sensors during the movement of the transducer.
