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

CT Scanning and Reconstruction Method and Imaging System Based on Inverse Compton Scattering Source

A Compton scattering source, Compton scattering technology, which is used in radiological diagnostic instruments, computed tomography scanners, radiation generation arrangements, etc. Effects of spectral and hardening artifact suppression, improved quality, and increased scan angle range

Active Publication Date: 2021-09-28
TSINGHUA UNIV
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, in order to achieve CT scanning of large-sized samples, the traditional method is to place the sample at a remote location and only use rays in the central area, which can effectively suppress spectral artifacts and ensure imaging quality, but often increases the scale of the entire device , reducing photon utilization efficiency

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
  • CT Scanning and Reconstruction Method and Imaging System Based on Inverse Compton Scattering Source
  • CT Scanning and Reconstruction Method and Imaging System Based on Inverse Compton Scattering Source
  • CT Scanning and Reconstruction Method and Imaging System Based on Inverse Compton Scattering Source

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0050] The following examples are described in detail in conjunction with the accompanying drawings to better understand the content of the present invention, but the provided examples are not intended to limit the protection scope of the present invention.

[0051] Please refer to Figure 1-Figure 2 , figure 1 Schematic diagram of the principle of the inverse Compton scattering source; figure 2 is the energy angular distribution of the inverse Compton scattering source. The focal spot size of the inverse Compton scattering source is determined by the lateral overlapping area of ​​the electron beam and the laser pulse. In traditional electron accelerators, the electron beam spot is relatively large, so the focal spot size of the generated rays is usually determined by the laser focal spot size, usually several The beam spot size of the electron beam of a laser plasma accelerator is usually on the order of microns, which is much smaller than the size of the laser focal spot,...

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 present invention discloses a CT scanning and reconstruction method and an imaging system based on an inverse Compton scattering source. The CT scanning and reconstruction method includes: Step S1: Differentially carry out a sample in each projection direction by using an inverse Compton scattering source. direction of multiple fan beams to obtain sub-projections of multiple overlapping fan beams in each projection direction; Step S2: Reconstruct the sub-projections in each projection direction to obtain at least Complete projection under two energies, and simultaneously reconstruct the sub-energy spectrum of the fan beam in each projection direction to obtain the complete energy spectrum corresponding to the complete projection in each projection direction; Step S3: through dual-energy or multi-energy CT The reconstruction algorithm obtains the spatial structure and material information of the sample according to the complete projection and complete energy spectrum.

Description

technical field [0001] The invention relates to a CT scanning and reconstruction method and an imaging system, in particular to a CT scanning and reconstruction method and an imaging system based on an inverse Compton scattering source. Background technique [0002] X / γ-ray (X-ray and γ-ray are not distinguished in the following introduction, collectively referred to as X-ray) CT imaging (Computed Tomography, computerized tomography imaging) technology can not only accurately and quickly reproduce the three-dimensional structure inside the object, but also quantitatively provide Internal material information has been widely used in medical, industrial and scientific research fields. The spatial resolution of X-ray CT imaging technology (referred to as CT imaging) is closely related to the size of the focal point of the ray source, and generally the smaller the focal point size, the higher the spatial resolution. The material resolution of CT imaging mainly depends on the mo...

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): G01N23/046A61B6/00A61B6/03
CPCA61B6/032A61B6/40A61B6/5258G01N23/046
Inventor 鲁巍华剑飞肖永顺马跃王波郭博白植豪
Owner TSINGHUA UNIV