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Method and device using grating servo dosage rate, and radiotherapy equipment

A technology of radiation therapy and dose rate, applied in radiation therapy, therapy, X-ray/γ-ray/particle irradiation therapy, etc., can solve the problem that third-party grating cannot perform dynamic intensity modulation.

Active Publication Date: 2020-10-16
SUZHOU LINATECH MEDICAL SCI & TECH CO LTD
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Problems solved by technology

[0005] The object of the present invention is to provide a method, device and radiotherapy equipment using a grating servo dose rate to solve the problem of using a third-party grating when the dose rate of the linear accelerator is unstable. dynamic tone problem

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  • Method and device using grating servo dosage rate, and radiotherapy equipment
  • Method and device using grating servo dosage rate, and radiotherapy equipment
  • Method and device using grating servo dosage rate, and radiotherapy equipment

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Embodiment Construction

[0084] Preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0085] 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.

[0086] Since the dynamic intensity modulation of conformal intensity-modulated radiation therapy (IMRT) is that the blades of the multi-leaf collimator are in a moving state when the beam is emitted, the corresponding shape is formed by controlling the relative position and residence time of each pair of blades of the multi-leaf co...

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Abstract

The invention provides a method and device using grating servo dosage rate, and radiotherapy equipment, and relates to the technical field of radiotherapy. The method using grating servo dosage rate provided by the invention comprises the steps of obtaining real-time dosage rate of an accelerator; according to the dosage rate measured at the last time, predicting the dosage rate of the current time with a kalman filter; and according to the predicted dosage rate, calculating the moving target of grating. The dosage rate of the accelerator is monitored in real time, and the operating speed of the grating is adjusted according to an algorithm, so that the grating movement can serve fluctuation of the dosage rate, the dosage illumination is more pinpoint, and the effect of precise radiotherapy is achieved.

Description

technical field [0001] The invention relates to the technical field of radiotherapy, in particular to a method, device and radiotherapy equipment using grating servo dose rate. Background technique [0002] Radiation therapy has been developed for more than a century. Today, radiation therapy is still an important means of treating malignant tumors, and the treatment mode represented by intensity-modulated radiation therapy (IMRT) is the mainstream of radiation therapy technology today. In recent years, the intensity-modulated plan has been proved to have dosimetric advantages in many studies, which can make the shape of the dose distribution basically consistent with the shape of the target area, improve the tumor control rate, and reduce the radiation damage to organs at risk and normal tissues. Different from conventional radiotherapy planning, IMRT adopts an inverse planning system, that is, according to a pre-set objective function, an inhomogeneous intensity distribut...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61N5/10
CPCA61N5/1001A61N5/1071A61N5/1031A61N5/1045
Inventor 鞠垚文虎儿姚毅
Owner SUZHOU LINATECH MEDICAL SCI & TECH CO LTD
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