The Advantages of Tungsten Alloy Multileaf Collimator in 3d-Planning System

Recent technological developments such as 3D planning and modern tungsten alloy linear accelerators make it possible to treat more patients with conformal radiotherapy. This can be done using traditional Cerrobend blocks to shape the beam. This method however is time consuming since a block has to be made for each individual beam. During the treatment, the room has to be entered between different beams to replace the block. Therefore, a tungsten alloy multileaf collimator (MLC) was retrofitted on linear accelerator. This tungsten alloy multileaf collimator has 3 major advantages :

1、There is no need to make Cerrobend blocks.
2、There is no need to enter the treatment room between different beams.
3、There is more freedom of movement, since there is no tray hanging under the machine head.

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