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Conformal covering method for treating tumors in thermal ablation mode

A technology of conformal coverage and thermal ablation, which is applied in image analysis, instrumentation, calculation, etc., can solve problems such as high image quality requirements, large amount of calculation information, and complex matching process, so as to reduce matching difficulty, optimize matching accuracy, reduce The effect of information

Inactive Publication Date: 2014-04-09
BEIJING UNIV OF TECH
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Problems solved by technology

Therefore, the traditional model matching technology has the disadvantages of large amount of calculation information, slow processing speed, complicated matching process, and high requirements for image quality.

Method used

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  • Conformal covering method for treating tumors in thermal ablation mode
  • Conformal covering method for treating tumors in thermal ablation mode
  • Conformal covering method for treating tumors in thermal ablation mode

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Embodiment Construction

[0027] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0028] The experimental data of this embodiment comes from the CT data of the PLA General Hospital (301 Hospital). There are 60 slices of tomographic images in each group of data, and the layer spacing is 2.5mm. Each CT image is composed of 512*512 pixels, and the size of each pixel is 0.703125mm*0.703125mm. The CT image is processed by computer three-dimensional visualization technology, and the STL file of the tumor model is obtained.

[0029] The flowchart of the conformal covering method of the present invention is as figure 1 shown, including the following steps:

[0030] Step 1, read in the STL file of the tumor, and calculate the corresponding parameters of the required tumor model, the method is as follows:

[0031] Step 1.1, calculate the coordinates of the center point of the tumor model.

[0032] Suppose the tumor model point set...

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Abstract

The invention discloses a conformal covering method for treating tumors in a thermal ablation mode. The conformal covering method includes the first step of enabling STL files of the tumors to be read in, and solving parameters of tumor models, the second step of enabling thermal field model files to be read in from a thermal field model database, and solving parameters of three-dimensional thermal field models, wherein each thermal field model is formed by combining two rotating semi-ellipsoids, short axes of the two rotating semi-ellipsoids are equal and long axes of the two rotating semi-ellipsoids are coincident, and the third step of carrying out matching on the thermal field models to determine the optimized thermal field model. According to the conformal covering method, the tumor models and the thermal field models are constant in the matching process, and it is not required that points of two models are in one-to-one correspondence, so matching difficulty is greatly reduced. It is only required that external contours of the two models are matched, amount of information internally processed is greatly reduced, the processing speed is increased, and good real-time performance is achieved. A segmental matching algorithm is adopted, the optimized tumor model in the database can be determined according to matching conditions, and matching accuracy can be optimized and improved.

Description

technical field [0001] The present invention relates to the technical field of a microwave / radio frequency ablation operation planning system, in particular to a method for conformal coverage of a tumor based on a thermal ablation operation. Background technique [0002] Tumors have become one of the greatest threats to human life safety. Currently, surgery, radiotherapy, chemotherapy, X-knife, and gamma-knife can be used to treat tumors. However, these traditional methods have certain limitations. In recent years, with the development of technology, hyperthermia technology has become an effective method for treating human tumors. It kills tumor cells through thermal ablation. It has the advantages of minimally invasive and significant therapeutic effect, and has attracted more and more attention. It is considered to be the most promising treatment method. [0003] At present, clinical doctors use thermal ablation to treat tumors largely rely on personal experience. There...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/00
Inventor 吴水才高宏建彭庆涛张曼梁萍林岚吴薇薇
Owner BEIJING UNIV OF TECH
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