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

Energy spectrum CT material decomposition method and device, storage medium and electronic device

An energy spectrum and multi-energy spectrum technology, which is applied in 2D image generation, image data processing, instruments, etc., can solve the problems of poor decomposition accuracy and high noise of decomposition base images, and achieve the effect of reducing noise level and improving efficiency and quality.

Active Publication Date: 2020-01-10
SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
View PDF4 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The advantage of the former type of algorithm is high computational efficiency, but the disadvantage is that the decomposition accuracy is poor, and the noise of the decomposition base image is high

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
  • Energy spectrum CT material decomposition method and device, storage medium and electronic device
  • Energy spectrum CT material decomposition method and device, storage medium and electronic device
  • Energy spectrum CT material decomposition method and device, storage medium and electronic device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] figure 1 It is a flowchart of a material decomposition method for spectral CT provided in Embodiment 1 of the present invention. This embodiment is applicable to the case of material decomposition of spectral CT, especially applicable to the case of obtaining CT images of each material base corresponding to multi-energy spectral CT projection data. The method can be executed by the energy spectrum CT material decomposition device provided by the embodiment of the present invention, the device can be realized by software and / or hardware, and the device can be integrated on various electronic devices.

[0031] see figure 1 , the method of the embodiment of the present invention specifically includes the following steps:

[0032] S110. Acquire multi-energy spectrum CT projection data.

[0033] Among them, a multi-energy spectrum computerized tomography scanner (Computed Tomography, CT) uses X-rays of different energies to scan objects to obtain multi-energy spectrum CT ...

Embodiment 2

[0039] figure 2 It is a flowchart of a material decomposition method for spectral CT provided in Embodiment 2 of the present invention. This embodiment is optimized on the basis of the above-mentioned technical solutions. In this embodiment, optionally, the above-mentioned training method for the spectral decomposition model may specifically include: collecting an initial image, performing channel decomposition on the pixel values ​​of the initial image to obtain a simulated material base; based on preset rules, according to the simulated material Generate simulated multi-energy spectrum sample data; construct initial energy spectrum decomposition model; train initial energy spectrum decomposition model based on simulated multi-energy spectrum sample data and simulated material base, adjust network parameters of initial energy spectrum decomposition model, and generate energy spectrum decomposition Model. Wherein, explanations of terms that are the same as or corresponding ...

Embodiment 3

[0063] Figure 4It is a flowchart of a material decomposition method for spectral CT provided in Embodiment 3 of the present invention. This embodiment is optimized on the basis of the above-mentioned technical solutions. In this embodiment, optionally, the initial spectral decomposition model may include a multi-channel network model, and for the first channel network model, it may include sequentially connected projection domain sub-models, data conversion modules, and image domain sub-models. Wherein, explanations of terms that are the same as or corresponding to the above embodiments are not repeated here.

[0064] see Figure 4 , the method of this embodiment may specifically include the following steps:

[0065] S310. Collect an initial image, perform channel decomposition on the pixel values ​​of the initial image to obtain a simulated material base, and generate simulated multi-energy spectrum sample data according to the simulated material base based on preset rule...

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 embodiment of the invention discloses an energy spectrum CT material decomposition method and device, a storage medium and an electronic device. The method comprises the following steps of acquiring the multi-energy-spectrum CT projection data; and inputting the multi-energy-spectrum CT projection data into a pre-trained energy spectrum decomposition model, and obtaining the CT images of eachmaterial base according to an output result of the energy spectrum decomposition model, the energy spectrum decomposition model being used for synchronously performing image reconstruction and energyspectrum decomposition on the multi-energy-spectrum CT projection data. According to the technical scheme of the embodiment of the invention, the end-to-end one-stop energy spectrum CT material decomposition can be realized, and the noise level of the CT image can be effectively reduced by omitting an intermediate link, so that the energy spectrum CT material decomposition efficiency and quality are improved.

Description

technical field [0001] Embodiments of the present invention relate to CT imaging technology, and in particular to a material decomposition method, device, storage medium and electronic equipment for spectral CT. Background technique [0002] Spectral CT imaging is a quantitative CT imaging technology, which uses X-rays of different energies to scan objects, and theoretically calculates the composition of objects. When based on the most basic interaction between matter and X-rays, spectral CT imaging can accurately give the equivalent atomic number distribution map and electron density distribution map of the substance. The CT map obtained from the above decomposition is also called material or substance decomposition base. [0003] For the current spectral CT image reconstruction algorithms, one is the projection domain decomposition, and the second is the CT image domain decomposition. The so-called projection domain decomposition refers to decomposing the base material or...

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): G06T11/00
CPCG06T11/005
Inventor 葛永帅梁栋张谊坤刘新郑海荣
Owner SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI