Multi-leaf collimator and radiotherapy device

Abstract

The invention discloses a multi-leaf collimator. The multi-leaf collimator comprises at least one first blade group which comprises a plurality of first grid blades extending in a first direction andarranged in a second direction, wherein the first direction intersects with the second direction; each first grid blade comprises a first end and a second end which are oppositely arranged, and the first end is a fixed end; each first grid blade comprises at least one first subarea and at least one second subarea, and the ray attenuation capacity of the first subarea is less than the ray attenuation capacity of the second subarea; and the second partition is at least located at the second end. According to the technical scheme provided by the embodiment of the invention, light transmission ofthe first subarea and shading of the second subarea can be realized through partition setting of the first grid blades; therefore, the second subarea arranged at the second end is used for shielding the central area of the irradiation visual field, so that rays irradiated on the part, which does not need to be diagnosed, of a patient can be reduced, and the damage to the patient because the patient receives multiple unnecessary doses is avoided.

Description

technical field [0001] Embodiments of the present invention relate to the technical fields of reflexology therapy and medical equipment, and in particular, to a multi-leaf grating and a radiotherapy device. Background technique [0002] With the development of science and technology, health and medical treatment have attracted much attention. As a way of medical detection, X-ray equipment can be used to detect "lesions". However, X-ray equipment often suffers from dose hazards. In order to effectively reduce the damage of X-rays to the human body and reduce the dose received by the human body, a beam limiter is usually used to achieve this purpose. [0003] However, the currently used beam limiter cannot precisely define the shape that needs to be irradiated with X-rays, so that the parts that patients do not need to be diagnosed are also exposed to X-rays, which eventually leads to excessive doses received by the human body, and X-rays are harmful to the human body. The ...

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Problems solved by technology

[0003] However, the currently used beam limiter cannot precisely define the shape of the X-ray to be irradiated, so that the parts of the patient that do not need to be diagnosed are also exposed to the X-ray, which eventually causes the human body to receive an excessive dose, and X-rays are harmful to the human body. still more damage

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