Set of 16 prototype electrodes for applied potential tomography (APT), 1987.

Image number: 10290006

Set of 16 prototype electrodes for applied potential tomography (APT), 1987.

This apparatus was developed by Professor B H Brown at the Royal Hallamshire Hospital, Sheffield, England. In APT, now renamed electrical impedence tomography, electrodes attached to the body apply tiny electrical signals, which other electrodes pick up. Changes in the strength and timing of these signals are analyzed by computer to create an image. The electrodes are illustrated attached to a grapefruit which is standing in for a child's head and liquid is injected into the 'head' to mimic a brain haemorrhage.

Image number:
10290006
Credit:
Science Museum/Science & Society Picture Library
Date taken:
20 October 2003 12:48
Image rights:
Science Museum