Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Dual-energy CT (Computer Tomography) scan data based detection method for reconstructing projected image

A technology of data reconstruction and CT scanning, which is applied in the field of image analysis and positioning, and can solve the problems of difficult prediction of feasibility and high cost

Inactive Publication Date: 2014-04-16
TIANJIN UNIV
View PDF2 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of dual-energy CT will bring about problems such as increased costs, and currently dual-energy CT has not been used in the field of radiotherapy
Although ordinary X-ray photography has the characteristics of real-time and other characteristics, it is difficult to predict the feasibility of using the images to identify treatment targets. It is still unpredictable whether images with practical value can be collected during radiotherapy.

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
  • Dual-energy CT (Computer Tomography) scan data based detection method for reconstructing projected image
  • Dual-energy CT (Computer Tomography) scan data based detection method for reconstructing projected image
  • Dual-energy CT (Computer Tomography) scan data based detection method for reconstructing projected image

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] Based on the physical basis of dual-energy X-ray subtraction technology, this method analyzes the basic principle of selectively erasing a certain material image by using high-energy and low-energy X-rays to double-exposure an object from the perspective of the interaction between matter and X-rays. An image processing method using dual-energy X-ray subtraction technology - logarithmic subtraction method. And according to the physical basis of dual-energy subtraction technology, the theoretical model of the correlation between the gray value of the pixel in the dual-energy subtraction image, the internal properties of the material and the external shooting parameters is further derived.

[0030] Invented the product value of the ray equivalent path length based on CT data (the length of the X-ray passing through the tissue) and the relative electron density of the tissue (the ratio of the electron density of the substance to the electron density of water) as the judgment...

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 invention relates to image analysis and positioning and relates to the CT (Computer Tomography) technical field. A dual-energy CT scan data based detection method for reconstructing a projected image aims at obtaining the image so as to be beneficial to the improvement of the positioning accuracy and the tracking accuracy, wherein the image is high in contrast ratio and a certain structure of the image is eliminated selectively. According to the technical scheme, the dual-energy CT scan data based detection method includes that the formula of a dual-energy subtraction angiography image is as follows and parameters and instructions in the formula are as follows. The dual-energy CT scan data based detection method for reconstructing the projected image is mainly applied to CT.

Description

technical field [0001] The invention relates to image analysis and positioning, and relates to a method for generating dual-energy subtraction projection images using computer tomography (Computer Tomography, CT) images. It can be used to detect material thickness, material identification, etc. It can also be used in radiotherapy to predict the location and tracking of treatment targets. Background technique [0002] The quality of CT images plays a very important role in tumor identification, localization, formulation of treatment plan and design of radiotherapy plan. In real-time tracking (or four-dimensional) radiotherapy, the real-time position of the tumor is determined by comparing real-time two-dimensional X-ray images with DRR reconstructed from CT data. Therefore, the quality of DRR images is also important for the accuracy of radiotherapy. Since dual-energy CT can be used to obtain images that selectively remove certain tissues, the introduction of dual-energy CT...

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
IPC IPC(8): G06T11/00G06T7/00A61B6/03
Inventor 王学民霍杰撒煜朱险峰宋鹏
Owner TIANJIN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com