In recent years instrument makers have refined the therapy further with a technique called Intensity Modulated Radiation Therapy.

FORBES: Men, Cancer & Hope

The technique, called Image Guided Intensity Modulated Radiotherapy Treatment uses imaging provided by a CT scan to target the tumour before a powerful but precisely shaped radiation dose is administered.

BBC: 'Cinderella cancer' comes in from the cold

In 2002 cancer doctors began prescribing a new service called intensity-modulated radiation therapy.

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