Wireless-Capsule Diagnostic Endoscopy for Recurrent Small-Bowel Bleeding

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Abstract
We used wireless-capsule endoscopy1 to assess patients with obscure or uncontrolled gastrointestinal bleeding. The capsule endoscope contains a miniature video camera, a light source, batteries, and a radio transmitter ( Figure 1 ). Video images are transmitted by means of radio telemetry to aerials taped to the body that allow images to be captured. The strength of the signal is used to calculate the position of the capsule in the body. Moving images from a period as long as six hours are stored on a portable recorder. With the approval of the ethics committee, four patients swallowed the device. We present here the first images of pathologic conditions in the human small bowel we obtained using this new endoscopic system (Given Imaging, Yoqneam, Israel).

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