National Physical Laboratory

Standardisation of positron-emitters in gas with the NPL primary gas counting system

Further Information

Published: 30 September 2010

Author: M Marouli, Julian Dean, John Sephton, N M Spyrou

Related: Ionising Radiation

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Developing standards to calibrate instruments used to monitor PET gas at hospitals and industrial sites.

The increase in use of Positron Emission Tomography (PET) scans, e.g. to image tumours and the human brain, has led to a subsequent increase in positron emitters and a need for primary standards to help protect patients, workers and the public from exposure to radiation. A gas counting system was used and compared with measurements from an ionisation chamber.

Last Updated: 31 Mar 2014
Created: 10 Mar 2011


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