Method, device and radiotherapy equipment using grating servo dose rate

A radiation therapy and dose rate technology, which is applied in radiation therapy, treatment, X-ray/γ-ray/particle irradiation therapy, etc., can solve the problem that the third-party grating cannot be dynamically modulated, and achieve the effect of precise dose irradiation

Active Publication Date: 2021-05-11
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, device and radiotherapy equipment using grating servo dose rate
  • Method, device and radiotherapy equipment using grating servo dose rate
  • Method, device and radiotherapy equipment using grating servo dose rate

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[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, device and radiotherapy equipment using grating servo dose rate, and relates to the technical field of radiotherapy. The grating servo dose rate method provided by the present invention includes: obtaining the real-time dose rate of the accelerator; using the Kalman filter to predict the dose rate at the current moment according to the dose rate measured at the previous moment; and calculating the motion of the grating according to the predicted dose rate Target. By monitoring the dose rate of the accelerator in real time, the operating speed of the grating is adjusted according to the algorithm, so that the motion of the grating can servo the fluctuation of the dose rate, making the dose irradiation more accurate and achieving the effect of precise radiotherapy.

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 Patents(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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