Heat field border displaying method ofr microwave interventional therapy of tumor

A technology of interventional therapy and boundary display, applied in microwave therapy, medical science, special data processing applications, etc., can solve problems such as large amount of calculation, a few minutes to half an hour, complex process, etc., to achieve fast calculation speed and meet real-time Sex, the effect of simple process

Inactive Publication Date: 2007-12-19
广东世荣兆业股份有限公司
View PDF1 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] This method provides a method for calculating the three-dimensional distribution of the microwave thermal field under multiple microwave antennas, but the database established by this method is based on the arrangement and combination of six situations, and each situation is limited to a limited number of values, so The thermal field distribution that can be calculated is a variety of situations where the treatment parameters change discontinuously, which is very limited, and the situation of the tumor is ever-changing, so this method can only provide a relatively good treatment plan limited by various conditions
[0005] In addition, this method establishes mathematical models for the permutations and combinations of multiple values ​​in the six situations, and then uses finite element software to calculate the thermal field distribution. The process is complicated and the amount of calculation is large. It usually takes ten minutes to half an hour. Can't meet real-time performance

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Heat field border displaying method ofr microwave interventional therapy of tumor
  • Heat field border displaying method ofr microwave interventional therapy of tumor
  • Heat field border displaying method ofr microwave interventional therapy of tumor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] The present invention will be further described by taking the three-dimensional thermal field boundary display of liver cancer microwave interventional therapy under the action of multiple microwave antennas as an example.

[0018] step one:

[0019] The simulation measurement is carried out on the experimental device shown in Figure 1, and the microwave radiation energy SAR (Specific Absorption Rate) absorbed by the unit volume phantom tissue per unit time is calculated by a single radiation antenna at the typical radiation power of 40W, 50W and 60W through the combined equation )Distribution function.

[0020] Bioheat equation:

[0021] ρC ∂ T ∂ t = K ▿ 2 T + W b C b ( T a...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The heat field boundary displaying method for microwave interventional therapy of tumor includes the following steps: 1. measuring and calculating SAR distribution function of real-time 3D solidification heat field of single microwave antenna under different radiation power; 2. establishing mathematic model of heat field distribution under the action of over one microwave antenna based on the SAR distribution function; and 3. substituting the boundary temperature of the heat solidification region, the treating time and the tumor perfusing coefficient into the mathematic model of heat field distribution to find out the coordinate points meeting the requirement of the mathematic model and to find out the 3D display of the coordinate point set through software treatment. The present invention has continuous regulation of treating parameters, simple process, fast calculation speed and real-time display.

Description

technical field [0001] The invention relates to a method for displaying the boundary of a microwave radiation thermal field, in particular to a method for displaying a boundary of a three-dimensional thermal field for interventional treatment of tumors with multiple microwave treatment needles. Background technique [0002] Microwave interventional therapy for tumors is to puncture the microwave antenna (treatment needle) percutaneously into the lesion area of ​​the human body, use the microwave antenna tissue to generate microwaves, form a certain shape of thermal coagulation area in the local area irradiated by microwaves, and use high temperature to heat necrosis of the tumor. It is the most ideal treatment plan that the thermal coagulation zone just completely covers the tumor. If the boundary line of the thermal coagulation zone exceeds the outline of the tumor, the normal tissue cells in the human body will be damaged. If the thermal coagulation zone does not completely...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): A61B18/18A61N5/02G06F17/00
Inventor 祝文春
Owner 广东世荣兆业股份有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap