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

Image reconstruction method and device as well as CT (Computerized Tomography) machine

An image reconstruction and weighting technology, applied in image generation, image data processing, 2D image generation, etc., can solve problems such as image quality defects

Inactive Publication Date: 2012-05-16
GE MEDICAL SYST GLOBAL TECH CO LLC
View PDF6 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This patent introduces the method of reconstruction under the asymmetric detector in helical scanning in a relatively general way, but the quality of the reconstructed image is defective, and it has not been able to provide a solution to the image reconstruction of multi-row CT with more than four rows Program

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
  • Image reconstruction method and device as well as CT (Computerized Tomography) machine
  • Image reconstruction method and device as well as CT (Computerized Tomography) machine
  • Image reconstruction method and device as well as CT (Computerized Tomography) machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0146] Specific examples of the present invention will be described in detail below, but the present invention is not limited to the following specific examples.

[0147] In one aspect of the present invention, the present invention discloses an image reconstruction method, which is used for image reconstruction based on projection data obtained through an asymmetric detector, such as figure 1 shown, which includes:

[0148] Step 1) divide the projection data into 5 areas: area 1, area 2, area 3, area 4 and area 5, wherein,

[0149] The area 1 is an asymmetric area, and there are detection channels, but there are no detection channels that are symmetrical about the central channel,

[0150] The area 2 is a transition area, there is a detection channel, and a detection channel symmetrical to the central channel exists,

[0151] The area 3 is a symmetrical area, there is a detection channel, and a detection channel symmetrical to the central channel exists,

[0152] The area ...

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 discloses an image reconstruction method and device as well as a CT (Computerized Tomography) machine. The image reconstruction method disclosed by the invention is used for carrying out image reconstruction according to projection data obtained by an asymmetrical detector and comprises the following steps of: dividing the projection data into 5 regions, namely a region I, a region II, a region III, a region IV and a region V; respectively carrying out visual angle weighting on the projection data in the five regions; and reconstructing a sectional image of a shot object according to the weighted projection data. The image reconstruction device disclosed by the invention comprises a region dividing unit, a visual angle weighing unit and a reconstruction unit. The CT machine disclosed by the invention comprises the image reconstruction device disclosed by the invention. According to the technical scheme of the invention, the quality of the image which is constructed according to the projection data obtained by the asymmetrical detector is equal to that of the image which is reconstructed according to the projection data obtained by a symmetrical detector.

Description

technical field [0001] The present invention generally relates to the field of CT image reconstruction, in particular to an image reconstruction method and device and a CT machine. Background technique [0002] As we all know, at present, CT machine plays an increasingly important role in medical diagnosis. It can clearly image various organs in the patient's body, so that doctors can easily identify the lesion, so as to take corresponding treatment methods for the patient. The auxiliary medical function of CT machine is an important part of modern medicine that cannot be ignored, and it is also an indispensable part. [0003] Typically, a CT machine mainly includes a tube and a detector. The tube is used to emit X-rays, and the detector is used to receive the X-rays emitted by the tube and convert the X-rays into electrical signals to form projection data. Then, an image of the object (patient) to be irradiated is reconstructed according to the projection data. [0004] ...

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): G06T11/00A61B6/03
CPCG06T2211/432A61B6/5205A61B6/032A61B6/4208G06T11/005
Inventor 孙智慧董淑琴董加勤
Owner GE MEDICAL SYST GLOBAL TECH CO LLC
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