London: Remote sensing is helping a new radiotherapy treatment combat prostate cancer. The revolutionary technique has already been used on dozens of patients at the Royal Marsden Hospital in London. Because it only pinpoints cancer cells, it could impart a cutting edge to radiotherapy for thousands of men and save them from the unpleasant side-effects, the Daily Mail reported Tuesday. The therapy works by using three tiny transmitters, the size of a rice grain, implanted in the tumour. They give off a constant stream of signals, up to 10 a second, that are picked up by a receiver in X-ray equipment. This tracks the signals in much the same way that satellites in space pick up readings from a moving car. The same machine also delivers radiotherapy.
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