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DICOM data-based liver tumor microwave ablation three-dimensional temperature field simulation method

A technology of microwave ablation and three-dimensional temperature, which is applied in the fields of electrical digital data processing, design optimization/simulation, special data processing applications, etc., can solve the problem of lack of precise surgical plans for patients

Pending Publication Date: 2019-09-20
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

This two-point plan depends on the volumetric experimental data of the ex vivo ablation model and the experience of clinicians in puncturing ablation needles, and lacks precise surgical plans for different patients and guidance for clinicians with less puncture experience

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  • DICOM data-based liver tumor microwave ablation three-dimensional temperature field simulation method
  • DICOM data-based liver tumor microwave ablation three-dimensional temperature field simulation method
  • DICOM data-based liver tumor microwave ablation three-dimensional temperature field simulation method

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Embodiment Construction

[0021] The technical solutions and beneficial effects of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0022] Such as figure 1 As shown, the present invention provides a three-dimensional temperature field simulation method for microwave ablation of liver tumors based on DICOM data, taking abdominal CT and a liver tumor model near blood vessels as an example, including the following steps:

[0023] (1) Import the tumor and blood vessel models reconstructed and repaired by DICOM data into the multi-physics simulation module, select the working plane to draw the structure diagram of the ablation needle, and build the simulation geometric model;

[0024] 1) Reconstruction of 3D models of tumors and blood vessels based on DICOM data;

[0025] 2) The reconstructed model is repaired by the reverse modeling module Geomagic Studio to obtain a three-dimensional tumor and blood vessel model with smooth surface and high mesh qua...

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Abstract

The invention discloses a DICOM data-based liver tumor microwave ablation three-dimensional temperature field simulation method, which comprises the following steps: step 1, reconstructing and repairing a tumor and blood vessel model based on DICOM data, introducing the model into a multi-physical field simulation module, selecting a working plane to draw an ablation needle structure chart, and constructing a simulation geometric model; step 2, setting different materials and parameters for a computational domain in the simulation geometric model, wherein the specific material types comprise liver, tumor and PTFE; step 3, constructing a coupling electromagnetic wave radiation model and a biological heat transfer model; step 4, dividing grids for the simulation geometric model according to the model constructed in the step 3 and a set microwave frequency, and setting a solver solving method; and 5, performing visualization processing on the simulation data obtained by solving to obtain temperature field distribution data. According to the simulation method, a three-dimensional finite element simulation model can be established by using preoperative image data of a patient, an ablation thermal field is calculated, and formulation of an operation scheme is guided.

Description

technical field [0001] The invention belongs to the field of finite element simulation, and in particular relates to a three-dimensional temperature field simulation method for liver tumor microwave ablation based on DICOM data. Background technique [0002] Liver tumor is a common abdominal malignant tumor. Microwave ablation, as an effective treatment method for this tumor, has been included in the NCCN (National Comprehensive Cancer Network) treatment guidelines. The preoperative planning involves the setting of ablation thermal dose (ablation power, ablation time) and planning of ablation needle puncture path. This two-point plan relies on the volumetric experimental data of the ex vivo ablation model and the experience of clinicians in puncturing ablation needles, and lacks precise surgical plans for different patients and guidance for clinicians with less puncture experience. [0003] Most of the existing simulation methods for microwave ablation of liver tumors are b...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/23
Inventor 钱志余王娟赵金哲沐勇杰晋晓飞冯宇俞钦栋刘伟清李韪韬
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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