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Method and device for calibrating collimator of radiotherapy equipment

A calibration method and a calibration device technology, which are applied in the field of medical devices, can solve problems such as collimator offset, inaccurate alignment of collimation holes and radiation sources, dose deviation, etc., and achieve the effect of focusing

Active Publication Date: 2022-01-11
CYBERMED TECH XIAN +1
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The inventors of the present invention have found that with the increase in the number of times of use of the Gamma Knife device, the accuracy of the drive motor decreases, and improper operation during use will cause the problem of collimator offset
In this way, the collimation hole on the collimator may not be precisely aligned with the radiation source, resulting in an excessively large penumbra at the focal point and deviations in the dose

Method used

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  • Method and device for calibrating collimator of radiotherapy equipment
  • Method and device for calibrating collimator of radiotherapy equipment
  • Method and device for calibrating collimator of radiotherapy equipment

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Embodiment Construction

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0033] As used in this application, the terms "unit", "component", "module", "system" and the like are intended to refer to a computer-related entity, which may be hardware, firmware, a combination of hardware and software, software or running software. For example, a component may be, but is not limited to being, a process running on a processor, a processor, an object, an executable, a thread of execution, a program, and / or a computer. As an example, both a...

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Abstract

A collimator calibration method and device relate to the field of medical equipment. The method includes: respectively acquiring the ray projection images after the collimator (302) moves to M positions and sequentially passing through the collimator (302) and the isocenter plane (S401); according to the ray projection Image, determine the target position (S402) that makes the collimator (302) have the highest degree of alignment from the M positions; record the position parameters corresponding to the target position, so that the collimator ( 302) Move to the target position (S403). The position of the collimator (302) of the gamma knife device can be corrected.

Description

technical field [0001] The invention relates to the field of medical equipment, in particular to a calibration method and device for a collimator of radiotherapy equipment. Background technique [0002] At present, radiation therapy using Gamma Knife equipment has become an important means of treating tumors. The principle of Gamma Knife equipment is to use the collimator to make the gamma rays emitted by the radiation source emit from the collimation hole on the collimator and focus to the focal point, and then kill the lesion cells at the focal point. In the existing Gamma Knife equipment, during treatment, a motor needs to be used to drive the collimator to move to a predetermined position, so that the collimator hole on the collimator is aligned with the radiation source. [0003] The inventors of the present invention have found that with the increase in the number of times the gamma knife device is used, the accuracy of the drive motor decreases, and improper operatio...

Claims

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Application Information

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IPC IPC(8): G21K1/02A61N5/00A61B6/00
CPCA61B6/06G21K1/02A61B6/545A61B6/542A61B6/08A61N5/1084A61N5/1045G21K1/025
Inventor 李久良闫浩李金升苟天昌罗春
Owner CYBERMED TECH XIAN
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