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Method for inversing patient target region dosage in radiation therapy

A technology for radiotherapy and patients, applied in radiodiagnostic instruments, X-ray/γ-ray/particle irradiation therapy, medical science, etc., can solve problems such as affecting lesions and inaccurate imaging

Inactive Publication Date: 2008-07-02
SHEN ZHEN HYPER TECH SHENZHEN +1
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Problems solved by technology

[0004] The present invention provides a method for inversion of the dose of the patient's target area in radiotherapy, to solve the problem of inaccurate imaging caused by interpolation errors in the process of integrating the patient's target area into a quasi-three-dimensional image in the existing radiotherapy, thereby affecting the treatment of lesions Accuracy of plans

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  • Method for inversing patient target region dosage in radiation therapy
  • Method for inversing patient target region dosage in radiation therapy
  • Method for inversing patient target region dosage in radiation therapy

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[0084] The first embodiment of the present invention, 60 A Co stereotactic radiotherapy machine can be used as an embodiment of the above-mentioned idea after being loaded with a flat-panel detector. because 60 The Co γ-source is monoenergetic, so it is enough to only consider the fluence distribution on the energy fluence plane, then Ψ ij (E i，j , Φ i，j )=Ψ ij (Φ i，j ). However, only the radiation source rotating 60 Co stereotactic radiotherapy machine just can use the method that this patent provides. This is for the multiple 60 Co or single spin 60 Co stereotactic radiotherapy machines are applicable. At this time, it is necessary to add an imaging source specially used for positioning the patient, and reduce the energy of the γ-ray of the imaging source, which can improve the contrast of soft tissue imaging. The formula 1 provided by this patent can realize the automatic positioning image of the patient The method of determining the treatment center and the oute...

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Abstract

The invention discloses a method of dose reversal of the target of a patient in radiotherapy, the method makes use of a light source and a flat panel detector to carry out the rotary scanning around the target of the patient, so as to obtain the data of the target image of the patient and the dose data which penetrates the target of the patient; the invention applies a virtual PI line reconstruction algorithm to carry out the reconstruction and processing, and the treatment is carried out by adjusting the position of the patient and the input dose distribution data according to the processing results. As the invention adopts a true three-dimensional image reconstruction algorithm which is based on the flat panel detector, the spatial resolution of the true three-dimensional image is isotropic, the invention does not need interpolation, and can directly realize the processing of the image on the three-dimensional space, thus greatly improving the imaging precision and solving the problem that the imaging is not precise due to the interpolation error during the integration process into a quasi three-dimensional image of the existing radiotherapy, which can further affect the accurate implementation of the treatment plan of focus.

Description

technical field [0001] The invention relates to a method for measuring the dose received by a patient, in particular to a method for controlling the dose received by a patient's target area. Background technique [0002] Stereotactic radiotherapy is mainly divided into two categories: 60Co stereotactic radiotherapy and electron linear accelerator stereotactic radiotherapy. With the advancement of science and technology, mainly the advancement of rapid imaging technology, the whole process of radiotherapy from the formulation of the radiotherapy plan to the implementation of the plan, as well as the evaluation of the implementation after the plan is implemented, can use CT images as the main source of information. Data sets based on individual characteristics. The implementation of these technologies has greatly improved the accuracy and curative effect of tumor treatment, which is the development direction of the entire field of radiotherapy. In addition to the human anato...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61N5/10A61B6/00G06T1/00
Inventor 包尚联黄斐增崔智
Owner SHEN ZHEN HYPER TECH SHENZHEN
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