Beam hardening artifact correction device and method for ct images

A beam hardening and CT image technology, applied in the field of X-ray detection, can solve problems such as inaccurate projection data of bone tissue images, difficult to correct data, blurred connection between bone tissue and soft tissue around the brain, etc.
CN106551702BActive Publication Date: 2021-05-14GENERAL ELECTRIC CO
7 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
GENERAL ELECTRIC CO
Publication Date
2021-05-14

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The present invention provides a beam hardening artifact correction device and method for CT images. The device includes a bone tissue image acquisition module, a first correction module, an orthographic projection module and a corrected image acquisition module. The bone tissue image acquisition module is used to extract the bone tissue image from the reconstructed original image; the first correction module is used to adjust the current CT value of the bone tissue image; the forward projection module is used to adjust the bone tissue image after the CT value The front projection is performed to obtain the front projection data of the bone tissue image; the corrected image acquisition module is used for performing image reconstruction according to the front projection data of the bone tissue image and to obtain the corrected image.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the field of X-ray detection, in particular to a beam hardening artifact correction device and method for CT images. Background technique

[0002] Since X-rays are polychromatic rays, in computed tomography (CT) medical imaging technology, higher-energy X-rays have less attenuation than lower-energy X-rays, and as the thickness of X-ray projection increases , making more high-energy X-rays, resulting in beam hardening, so there are beam hardening artifacts in the reconstructed image.

[0003] At present, some correction methods can be used to reduce beam hardening artifacts, but the effect on beam hardening artifacts caused by bone tissue is not ideal.

[0004] For example, in the prior art, the original image is obtained by reconstruction according to the original projection data, the bone tissue image is extracted from the reconstructed original image, the extracted bone tissue image is projected, and the beam is corrected b...

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