Tungsten Electron Multileaf Collimator

In tungsten electron multileaf collimator (EMCL) are standard equipment for modern Linacs. The tungsten leaves are close to the beam source and need to be of high density material and thin in order to get good beam shaping properties in ISO center. Multileaf collimators are a basic requirement for IMRT.

In electron therapy still applicators are used to shape the beam, which needs to be done close to the patient.Tungsten electron multileaf collimator was designed as a substitute for all electron applicators, and as it made similar to photon-MLC design, remote controlled beam collimation and isocentric dose delivery can be done, similar to photon RT.

Tungsten electron multileaf collimator is mounted to the Gantry by means of an adapter, and the 30 tungsten leaves made of brass shaper the field up to the field size of 21.4 cm x 21.4 cm in 100 cm ISO center distance. The tungsten leaves are located 16 cm above the ISO center.

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