Multi-leaf collimator, double-layer multi-leaf collimator and medical equipment
A technology of multi-leaf collimator and medical equipment, which is applied in treatment, radiotherapy, X-ray/γ-ray/particle irradiation therapy, etc., and can solve the problem of limited field resolution
Active Publication Date: 2020-07-14
SHANGHAI UNITED IMAGING HEALTHCARE
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[0004] Based on this, it is necessary to provide a multi-leaf collimator, double-layer multi-leaf collimator and medical equipment
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[0035] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail through the following embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present application, not to limit the present application.
[0036] The serial numbers assigned to components in this document, such as "first", "second", etc., are only used to distinguish the described objects, and do not have any sequence or technical meaning. The "connection" and "connection" mentioned in this application all include direct and indirect connection (connection) unless otherwise specified. In the description of this application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", The orientation or positional relationship indicated by "bottom"...
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The invention provides a multi-leaf collimator, a double-layer multi-leaf collimator and medical equipment. According to the invention, a first direction is perpendicular to the central axis of a beamemitted by a radioactive source; a plurality of first blades do reciprocating motion on a first blade mounting structure in the first direction, and a plurality of second blades do reciprocating motion on a second blade mounting structure in the first direction. The first direction and a second direction are crossed, and the first blade mounting structure and the second blade mounting structure reciprocate on two face-to-face first sliding mounting structures in the second direction respectively and swing around the radioactive source all the time to form a cambered surface with the radioactive source as a circle center. The plurality of first blades and the plurality of second blades movably shield rays emitted by the radioactive source in the first direction or / and the second direction,so the shape of an out-of-radiation field can be dynamically adjusted and limitation to a certain specific position is broken; and thus, resolution at different positions of the whole radiation fieldis further realized.
Description
technical field [0001] The present application relates to the technical field of medical equipment, in particular to a multi-leaf collimator, a double-layer multi-leaf collimator and medical equipment. Background technique [0002] The medical equipment often used in tumor treatment is radiotherapy equipment, which uses the radiation emitted by radiotherapy equipment to kill tumor cells. The radiotherapy equipment usually includes a multi-leaf collimator (multi-leaf collimator, MLC) for conformally adjusting the radiation emitted by the radioactive source. The multi-leaf collimator is a mechanical moving part used to generate a conformal radiation field, and conformally adjusts the radiation emitted by the radioactive source. The multi-leaf collimator includes blades, blade guide boxes, and drive devices. The driving device directly drives the blades to reciprocate in the blade guide rail box along the inner wall track of the box, and adjusts the position of the blades so ...
Claims
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IPC IPC(8): A61N5/10
CPCA61N5/1045
Inventor 张剑杨坤
Owner SHANGHAI UNITED IMAGING HEALTHCARE