Your IP: 38.107.179.231 United States Near: United States

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This article has multiple issues. Please help improve it or discuss these issues on the talk page. It does not cite any references or sources. Please help improve it by citing reliable sources. Tagged since December 2009. Very few or no other articles link to it. Please help introduce links to this page from other articles related to it. Tagged since December 2009. It may need to be wikified to meet Wikipedia's quality standards. Tagged since December 2009. An isocentric technique is one where all beams used in a radiation treatment have a common focus point, a.k.a the isocentre. The movements of the linac are threefold: the gantry rotates (like a big crane arm - red arrows) the collimator twists in the head of the gantry (blue arrows) the bed swings around in the floor (green arrows) All of these movements in the modern linac occur around an axis that runs through the isocentre. In this way, if the centre of the target area in the patient's body is moved to coincide with the isocentre, then all motions of the machine will remain centred on the target. This way, non-target areas will only receive short durations of radiation, reducing damage to them, while the target area receives constant radiation.