Multi-leaf collimator leaf motion position control device and method and linear accelerator

A technology of moving position and multi-leaf grating, which is applied in the direction of radiological diagnostic equipment control, instrumentation, radiotherapy, etc., can solve the problem of inaccurate leaf position detection, achieve high equipment safety performance, improve precise control, and ensure patient safety.

Active Publication Date: 2017-01-25
NEUSOFT MEDICAL SYST CO LTD
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Problems solved by technology

[0008] In view of this, the present application provides a multi-leaf grating blade motion position control device, method and linear accelerator to solve the problem of blade position detection in the prior art caused by only using the motor encoder to detect the blade motion position in MLC equipment. exact question

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  • Multi-leaf collimator leaf motion position control device and method and linear accelerator
  • Multi-leaf collimator leaf motion position control device and method and linear accelerator
  • Multi-leaf collimator leaf motion position control device and method and linear accelerator

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Embodiment Construction

[0035] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with aspects of the present application as recited in the appended claims.

[0036] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right" etc. is based on the orientation or positional relationship shown in the drawings, and is only for It is convenient to describe the present invention and simplify the description, but does not indicate or impl...

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Abstract

The invention provides a multi-leaf collimator leaf motion position control device and method and a linear accelerator. The device comprises a control system and blade trolleys connected with the control system, wherein the blade trolleys are movably connected to sliding lead screws with displacement sensors, one end of each sliding lead screw is connected with a trolley motor with an encoder, and the encoders of the trolley motors and the displacement sensors are both electrically connected to the control system. By arranging the encoders of the trolley motors and the displacement sensors, multi-azimuth redundancy detection of motion positions of the blade trolleys is achieved, accurate control of the motion positions of the blade trolleys is improved, accurate control of the blade motion positions is preliminarily improved to form a designated regular coverage field, healthy parts of a patient is prevented from being irradiated by X rays, the safety of the patient is ensured, and the device reliability is improved.

Description

technical field [0001] The present application relates to the technical field of medical diagnostic equipment, in particular to a multi-leaf grating leaf motion position control device, method and linear accelerator. Background technique [0002] With the rapid development of radiotherapy technology, conformal radiotherapy and intensity-modulated radiotherapy have become the main techniques used in daily radiotherapy in major hospitals. The optimal problem of radiation therapy is to minimize the radiation dose to the patient's healthy tissue, at least maintain the radiation dose within the harmful threshold range, while exposing the cancerous tissue to a significantly harmful radiation dose. [0003] At present, the use of medical electronic linear accelerators in the implementation of position control for conformal and intensity-modulated therapy is becoming more and more widely used, especially through the use of MLC (Multi-leaf collimators, multi-leaf collimators) to achi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B6/06A61B6/00
CPCA61B6/06A61B6/4064A61B6/54A61N5/1045A61N5/1077G08C23/06G21K1/046A61B6/542
Inventor 靳峰
Owner NEUSOFT MEDICAL SYST CO LTD
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