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A new PTB measuring system offers the possibility of measuring the absorbed dose in the direct environment of the irradiated tumour During radiation therapy, the physicians try to keep the dose in the tumour as high as possible to destroy as many cancer cells as possible. To avoid the damaging of healthy tissue, it is becoming more and more important to check the exact amount of the dose.

Source: http://www.medicalnewstoday.com/articles/153840.php