Photon energy synthesis method and system of a medical linear accelerator

A linear accelerator and photon energy technology, applied in X-ray/γ-ray/particle irradiation therapy, radiotherapy, treatment, etc., can solve the problems of increasing the operating cost of medical linear accelerators

Active Publication Date: 2021-05-18
DUKE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As the amount of photon energy available increases, the operating costs of medical linacs increase significantly

Method used

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  • Photon energy synthesis method and system of a medical linear accelerator
  • Photon energy synthesis method and system of a medical linear accelerator
  • Photon energy synthesis method and system of a medical linear accelerator

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Experimental program
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preparation example Construction

[0049] Such as figure 1 As shown, the photon energy synthesis method of the medical linear accelerator according to some embodiments of the present invention comprises the following steps:

[0050] S100, acquiring the first energy photon beam dosimetry data corresponding to the low energy photon beam (percentage depth dose curve and off-axis dose distribution curve, etc.), and the second energy corresponding to the high energy photon beam whose energy is higher than the first energy photon beam photon beam dosimetry data and intermediate energy photon beam dosimetry data corresponding to intermediate energy photon beams corresponding to low energy photon beams and high energy photon beams;

[0051] S200, perform mathematical fitting on the dosimetry data of the first energy photon beam and the dosimetry data of the second energy photon beam according to the preset fitting coefficient, and obtain the synthetic energy photon beam dosimetry data corresponding to the synthetic ene...

specific Embodiment

[0090] The photon beam of the medical linear accelerator can choose one to three levels from 4 to 18MV, such as 6MV, 10MV and 15MV. After the acceptance of the third-level energy adjustment, measure the dosimetry data of each level of energy under various geometric conditions, and synthesize a 10MV energy photon beam from 6MV and 15MV. The specific implementation process is as follows:

[0091] 1. Obtain the first energy photon beam dosimetry data, the second energy photon beam dosimetry data, and the intermediate energy photon beam dosimetry data corresponding to the first energy photon beam dosimetry data and the second energy photon beam dosimetry data; The low-energy photon beams corresponding to the first energy photon beam dosimetry data and the high-energy photon beams corresponding to the second energy photon beam dosimetry data are respectively 6MV and 15MV photon beams, and the intermediate energy photon beams corresponding to the intermediate dosimetry data are 10MV ...

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Abstract

The present invention relates to a photon energy synthesis method and system of a medical linear accelerator, wherein the photon energy synthesis method of a medical linear accelerator comprises the following steps: acquiring first energy photon beam dosimetry data, second energy photon beam dosimetry data and intermediate energy Photon beam dosimetry data; mathematical fitting is performed on the first energy photon beam dosimetry data and the second energy photon beam dosimetry data according to the preset fitting coefficient to obtain synthetic energy photon beam dosimetry data; for the synthetic energy photon beam The dosimetry data is compared and verified with the intermediate energy photon beam dosimetry data to obtain the dosimetry data fitting deviation; the dosimetry data fitting deviation is compared with the preset threshold to obtain the comparison result. In the technical solution of the present invention, photon beams with high and low energies can be used to synthesize photon beams with characteristics similar to photon beams of any energy within the two energy ranges.

Description

technical field [0001] The invention relates to the technical field of radiotherapy, in particular to a photon energy synthesis method of a medical linear accelerator and a photon energy synthesis system of a medical linear accelerator. Background technique [0002] Medical linear accelerator is a kind of radiation therapy equipment, which is divided into electron beam and photon beam. A simple medical linear accelerator at least includes systems such as an accelerating tube, a high-power microwave source, a waveguide system, a control system, a ray leveling system, and a protection system. Medical linear accelerator is a product combining high, precise and cutting-edge technology in medical equipment, and it is one of the products with the highest technical content in the field of medical equipment. Only a few developed countries in the world can produce it. [0003] Traditional medical linear accelerators are divided into traveling waves and standing waves according to th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61N5/10
CPCA61N5/1031A61N5/1042A61N5/1065A61N5/1084
Inventor 刘博吴秋文张喜乐周付根
Owner DUKE UNIV
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