ANTONIA REEVE / SCIENCE PHOTO LIBRARY ANTONIA REEVE / SCIENCE PHOTO LIBRARY
Ultrasound scan. Doctor carrying out an abdominal ultrasound examination on a female patient. Ultrasound scanning uses high frequency sound waves to form an image of internal body structures and to search for such things as tumours and abscesses. A transducer held against the woman's abdomen emits the sound waves in short pulses and acts as a receiver for returning echoes. Echoes are created as each ultrasound pulse meets the boundary between two tissues of different densities. The monitor at upper right displays the resulting image.
Model release available. Property release not required.