JAMES KING-HOLMES / SCIENCE PHOTO LIBRARY JAMES KING-HOLMES / SCIENCE PHOTO LIBRARY
Capsule endoscope. Professor Paul Swain about to swallow a capsule endoscope. The camera in this pill provides video images of the stomach and intestines, allowing disorders such as ulcers to be found. An endoscope is a device for viewing the inside of the body. The capsule, measuring just 11 by 30 millimetres, has a light source and a radio transmitter. Once swallowed, the pill causes no sensation, and the patient can carry on life as normal. The pill moves through the digestive system in a day, sending images to a receiver worn by the patient. The images are then downloaded for analysis. Swain and his colleagues developed the camera at the Royal London Hospital, England.
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