Researchers at Thomas Jefferson University and Jefferson’s Kimmel Cancer Center in the US have developed a robotic tumour-tracking technique that could improve cancer treatment. The 4D robotic technique predicts and continuously tracks tumour motion during radiotherapy, which can help minimise the amount of radiation delivered to healthy tissue and maximise the dose to the tumour. The technique uses algorithms to predict tumour motion and compensate for errors due to any delay in system response. When tested, the technique was able to reduce irradiated planning target volume by 20-30 percent for medium-sized tumours and more than 50percent for small tumours.

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