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Method for patient target region automatically positioning in radiation therapy

An automatic positioning and radiotherapy technology, applied in the field of patient positioning, can solve problems such as accurate positioning of lesions and imprecise imaging, and achieve the effect of improving accuracy and precision

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

[0005] The present invention provides a method for automatic positioning of patient target area in radiotherapy to solve the problem of inaccurate imaging caused by interpolation errors in the existing method of automatic positioning of patient target area in radiotherapy. Affects the precise location of the lesion and the accuracy of the treatment plan

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  • Method for patient target region automatically positioning in radiation therapy
  • Method for patient target region automatically positioning in radiation therapy
  • Method for patient target region automatically positioning in radiation therapy

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[0076] 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 an automatic positioning method 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 image data of the target of the patient; the invention applies a virtual PI line reconstruction algorithm to carry out the reconstruction and processing on data to obtain the image of the target of the patient; and the treatment is carried out by comparison results of the input image data and the adjustment of the position of the patient. 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 the interpolation, and can directly realize the processing of the image on the three-dimensional space, thus greatly improving the imaging accuracy and 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 when in automatic positioning of the target of the patient of the existing radiotherapy, and the problem can further affect the precise positioning of focus and the accurate implementation of the treatment plan.

Description

technical field [0001] The invention relates to a method for positioning a patient, in particular to a method for controlling the positioning of 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. Among the many factors that affect the effect of radiotherapy during radiotherapy, the positioning of the patient, the determination of the location of the treatment center, and the control of the patient's movement (involuntary movement, target movement driven by organ movement) during the treatment process are the most important factors for accurate implementation. The key to image-guided radiotherapy and image-guided radiotherapy is also the key technical problem to be solved in radiotherapy equipment in the future. The more precise the high-dose radiotherapy, the higher the requirements in this regard. [0003] With the ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61N5/10A61B6/00G06T1/00
Inventor 包尚联黄斐增谢耀新姬长国崔智
Owner SHEN ZHEN HYPER TECH SHENZHEN
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