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Organ positioning during radiotherapy

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Radiotherapy of cancer tumors aims to maximize the dose delivered to the tumor while minimizing the dose delivered to the healthy tissue surrounding the tumor. One complicating factor is that most organs move, for example caused by the patient’s breathing, during a radiotherapy session. A margin is therefore added around the tumor and treated in the same way as the tumor in order not to miss any tumor cells.

Together with Micropos Medical we seek to develop an organ positioning system based on magnetic tracking which can perform the positioning in real time. The potential benefit of the organ positioning system is that more radiation can be delivered to the tumor and less to the healthy tissue around it. Hence, treatment efficiency can be increased, side effects can be reduced and treatment times can be shortened. Prostate cancer is the first type of cancer that will be treated using the organ positioning system.

Project leader: Mikael Persson