Tungsten alloy shield for dynamic multi-leaf collimator is tungsten alloy leaf on dynamic multi-leaf collimator. Certainly, there are multiple leaves. Dynamic multi-leaf collimator of linear accelerator was firstly used to replace conventional low melting alloy blocks, and was extensively used in clinical practice for the radiotherapy of different tumors.
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More specially, the dynamic multi-leaf collimator with tungsten alloy shield is now available as an integral or optional retrofit component of linear accelerator heads, permitting to shield automatically irregular fields by computerized movements of multiple tungsten alloy leaves. And the movements of these tungsten alloy leaves are controlled by a driving motor and a screw rod. The dynamic multi-leaf collimator radiation therapy system controls the multi-leaf collimator system through computer control software, which brings great convenience to radiation therapy, greatly improves the treatment efficiency. And it also has the advantages of traditional methods. It can not only change the shape of the irradiation field under the control of the computer, but also form a beam hole according to the shape of the tumor target area.
