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Calibrating the CyberKnife

NPL's Radiation Dosimetry Group completed an advanced radiotherapy calibration at the Mount Vernon Cancer Centre in London - the first NHS hospital to install a CyberKnife® radiotherapy treatment machine.

Alanine
Phantom plate showing alanine dosemeters
and an ionisation chamber

The CyberKnife® is not actually a knife at all but a compact linear particle accelerator (linac) mounted on a robotic arm. The linac produces an X-ray beam, which the robotic arm can aim towards a patient's tumour from almost any direction.

NPL used alanine dosemeters and an ionisation chamber in order to compare the direct measurement of absorbed radiation dose with the planned dose, and provide a traceable calibration.

Contact: Rebecca Nutbrown

Find out more about NPL's work in Ionising Radiation and Healthcare work, or see details of our Healthcare Calibration Services

Last Updated: 2 May 2012
Created: 31 Jan 2011