LEWIS HOUGHTON / SCIENCE PHOTO LIBRARY LEWIS HOUGHTON / SCIENCE PHOTO LIBRARY
Ultrasound scanner in a hospital. This machine uses sound waves to build internal images of the body. A transducer is held against the skin over the area that is to be studied. The transducer emits high-frequency sound waves and detects the reflected echoes. The results are used to build the image, which is displayed on the monitor.
Model release not required. Property release not required.