Unlock instant, AI-driven research and patent intelligence for your innovation.

Structural Propagation Restoration of Spectral CT

A local structure, local technology, applied in the field of structure propagation restoration, can solve the problems of reducing the clinical value of images, high image noise, and low image quality.

Active Publication Date: 2021-11-02
KONINKLJIJKE PHILIPS NV
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Unfortunately, if the image is reconstructed directly from the material line integrals, the image is very noisy
Consequently, the images obtained are of low quality, which may reduce the clinical value of the images

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
  • Structural Propagation Restoration of Spectral CT
  • Structural Propagation Restoration of Spectral CT
  • Structural Propagation Restoration of Spectral CT

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] A method for improving spectral CT image quality using a restoration algorithm that removes noise and / or artifacts from projection data and / or image data for spectral imaging studies while preserving underlying target structures and spectral features is described below. information.

[0023] first reference figure 1 , illustrates a spectral imaging system 100, such as a spectral computed tomography (CT) scanner. The illustrated spectral imaging system 100 utilizes kVp switching as discussed in more detail below to generate spectral projection data. Spectral imaging system 100 includes a generally fixed gantry 102 and a rotating gantry 104 rotatably supported by fixed gantry 102 and rotating about an examination region 106 about a z-axis.

[0024] A radiation source 108 , such as an X-ray tube, rotates with the rotating gantry 104 and emits radiation throughout the examination region 106 . Radiation source voltage controller 110 controls the average or peak emission v...

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

A method comprising obtaining at least one of projection data from a spectral scan or image data generated from said projection data, selecting local reference data from said at least one of said projection data or said image data set, determine a noise pattern for the selected reference dataset, estimate a potential local structure from the reference dataset based on the noise pattern, and restore the projection data or the at least one of image data.

Description

technical field [0001] The following generally relates to spectral projection data and / or spectral image data processing, and more particularly to structure propagation recovery of spectral projection data and / or spectral image data, and is described with particular application to computed tomography (CT). However, the following also applies to other imaging modalities. Background technique [0002] Spectral (or multi-energy) CT has utilized two attenuation values ​​acquired simultaneously at two different photon energies (e.g., with dual-energy CT) to resolve the photoelectric and Compton contributions including the mass attenuation coefficient of the material being scanned, And then the unknown material is identified by its photoelectric and Compton contribution values. This method is well suited for materials such as iodine with k-edge energies close to the average value of the diagnostic energy range. Since any two linearly independent sums of two basis functions span ...

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 Patents(China)
IPC IPC(8): A61B6/03A61B6/00G06T11/00
CPCA61B6/032A61B6/482A61B6/5205A61B6/5258G06T11/005G06T2211/408G06T5/70G06T7/0014G06T2207/10081
Inventor L·戈申
Owner KONINKLJIJKE PHILIPS NV