In a Diagnostic Ultrasound Hialeah exam, a transducer both sends the sound waves and records the echoing waves. When the transducer is placed against the skin, it transmits tiny pulses of inaudible, high-frequency sound waves into the body. As the sound waves bounce off internal organs, fluids and tissues, the sensitive receiver in the transducer records tiny changes in the sound's pitch and direction. A computer instantly measures these signature waves and displays them as real-time pictures on a monitor.
On the other hand, Doppler ultrasound, a special ultrasound technique, is capable of measuring the direction and speed of blood cells as they go through vessels. The activity of blood cells causes a slight deviation in pitch of the reflected sound waves caused , and a computer retrieves and manages the sounds and creates graphs or color pictures that show the flow of blood.