By Bill Freeman
Researchers at Loughborough University in the UK are developing a Star Trek-like device that can spot potential health problems simply by shining a light on the skin. The device is based on a conventional technique known as photoplethysmography (PPG), which is used to determine blood flow in different parts of the body.
Researchers at Loughborough University in the UK are developing a Star Trek-like device that can spot potential health problems simply by shining a light on the skin. The device is based on a conventional technique known as photoplethysmography (PPG), which is used to determine blood flow in different parts of the body. However, the major difference with the new device is that there is no need for skin contact. It works by emitting a light and measuring how much is absorbed by the body through a type of wave known as a pulse waves. Abnormalities in light absorption would suggest problems that warrant further investigation. Study leader Professor Peter Smith and his colleagues believe that with further development the device may be able to monitor vital signs such as blood flow and assess how injuries such as burns and wounds are healing.
SOURCE/REFERENCE: Reported by www.bbc.co.uk on the 20th September 2002