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A Grating Position Calibration and Verification Method Based on Epid

A verification method and grating technology, applied in the medical field, can solve the problems of cumbersome operation and inaccurate and objective detection results, and achieve the effect of simple operation and improved detection accuracy

Active Publication Date: 2022-01-14
SUZHOU LINATECH MEDICAL SCI & TECH CO LTD
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  • Application Information

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Problems solved by technology

[0008] In order to solve the above-mentioned technical problems that the detection results of the existing optical field-based and EPID-based grating position calibration and verification methods are not accurate and objective, and the operation is relatively cumbersome, the present invention provides a new EPID-based grating position calibration and verification method

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  • A Grating Position Calibration and Verification Method Based on Epid
  • A Grating Position Calibration and Verification Method Based on Epid
  • A Grating Position Calibration and Verification Method Based on Epid

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Embodiment Construction

[0069] Preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0070] 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 creative efforts fall within the protection scope of the present invention.

[0071] The equipment based on the present invention is an electronic portal imaging system (EPID) and an orthogonal double-layer grating. The EPID can measure the radiation intensity emitted from the radiation source and penetrate the patient in radiotherapy, and convert it into an electrical signal to form a digital image. It is ...

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Abstract

The present invention solves the problem that the detection results of the existing optical field-based and EPID-based grating position calibration and verification methods are not accurate enough and the operation is cumbersome, and provides a new EPID-based grating position calibration and verification method. The core of the method is It is to make full use of the characteristics of the orthogonal double-layer grating to determine the coordinate origin of the isocenter plane. The operation is relatively simple, and the detection accuracy can be improved, which is of great clinical significance.

Description

technical field [0001] The invention belongs to the field of medical technology, and in particular relates to an EPID-based grating position calibration and verification method. Background technique [0002] The grating is an essential collimation device in modern radiotherapy equipment. Through the movement of the grating blades, it can have a very good conformal effect on the treatment target area; the multi-leaf collimator (MLC) is a radiotherapy clinical Commonly used gratings, in general, the more precise the motion control of the MLC, the closer it can be to the treatment effect calculated by the treatment planning system (TPS). Since the grating movement position in the TPS design plan is on the isocenter plane (ISO), and the MLC is installed on the isocenter plane, such as figure 1 shown. Therefore, it is necessary to establish a corresponding relationship between the physical position of the MLC on the grating plane and the position of the isocenter plane, and it ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61N5/10
CPCA61N5/1048A61N5/1049A61N5/1045A61N2005/1054
Inventor 王忠淼文虎儿姚毅
Owner SUZHOU LINATECH MEDICAL SCI & TECH CO LTD