Multi-blade collimator and radiotherapy equipment

Abstract

The invention relates to a multi-blade collimator and radiotherapy equipment, and belongs to the field of radiotherapy. The multi-blade collimator comprises a first blade box body, a second blade boxbody, a first blade set arranged on the first blade box body, a second blade set arranged on the second blade box body, and a driving device. The driving device can drive the first blade box body andthe second blade box body to synchronously move in the same direction. According to the multi-blade collimator provided by the embodiment of the invention, two blade boxes are driven to synchronouslymove in the same direction, so that the position accuracy of a radiation field along with the movement of the gross tumor volume can be improved. Therefore, during the position movement of the radiation field, the shape of the radiation field cannot be changed. The precision and the reliability of the radiotherapy are higher. Meanwhile, the two blade boxes can synchronously move in the same direction. That means, the two blade sets can synchronously move in the same direction. Therefore, the problem that blades are damaged due to the existence of a control error is avoided.

Description

technical field [0001] The invention relates to the field of radiotherapy, in particular to a multi-leaf collimator and radiotherapy equipment. Background technique [0002] A multi-leaf collimator (Multi-Leaf Collimator; MLC) is a mechanical moving part used to generate a conformal radiation field, and is an important part of radiotherapy equipment. The MLC generally includes two vane boxes oppositely arranged, and a vane group is arranged on each vane box. The two blade groups set on the two blade boxes can move relative to the blade box along the longitudinal direction of the blades, and according to the shape of the tumor target area (that is, the shape of the tumor to be irradiated), the corresponding shape of the irradiation can be formed. wild. [0003] During radiotherapy, the patient's breathing may cause the position of the tumor to shift, and the radiation field formed by the MLC may not be accurately aligned with the tumor target area. If the radiation field is...

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Problems solved by technology

[0005] The embodiment of the present invention provides a multi-leaf collimator and radiotherapy equipment, which can solve the problems of low precision when the irradiation field moves with the tumor target area and damage to the leaves due to the existence of control errors in the related art

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