A national NHS trial will see patients in England given edible miniature cameras to check for signs of colon cancer.
The Pillcam Colon 2 technology, from US medical device firm Medtronic, takes images as it passes through the bowel which are transmitted to a recording device worn by the patient at their waist. After the camera has passed through the body it can be flushed away.
An initial group of 11,000 patients in more than 40 areas in England will receive the capsules, which can replace a traditional endoscopy and provide a diagnosis within hours.
Pillcams are already being used the endoscopy team at University College London Hospitals NHS Foundation trust (UCLH), as well as by the NHS in Scotland and health clinics internationally.