Images are taken the whole time the device is moving up and down the gullet and the whole process takes a matter of minutes.

BBC: Scanner

Currently doctors diagnose stomach cancer by taking a biopsy of the stomach lining using a probe and a flexible camera passed via mouth and down the gullet.

BBC: Stomach cancer 'spotted by breath test'

Mr Salmond said Scotland's oil had disappeared "down the gullet of the London Treasury", while Norway had established a fund which would see the country remain prosperous for generations after its oil had run out.

BBC: NEWS | UK | Scotland | Salmond sets his sights on 2007

In its natural state, the white, viscous liquid slides down your gullet with an earthy tang.

BBC: The return of Mexico��s national nectar

He dropped his trunk into the dark water, and then raised it to pour gallons and gallons of water down his gullet.

BBC: Zimbabwe, a side you've never seen