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CT image generation method and device, electronic equipment and computer storage medium

A CT image and computer program technology, applied in the field of CT image generation and computer storage media, can solve the problems of blurred images, loss of original image information, and quality degradation, and achieve the effect of removing ring artifacts

Pending Publication Date: 2022-01-28
TSINGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the ring artifact removal method in the prior art can correct the ring artifact, the original information of some images will be lost in the process of data processing, which will lead to the problems of image blur and quality degradation in the reconstructed image

Method used

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  • CT image generation method and device, electronic equipment and computer storage medium
  • CT image generation method and device, electronic equipment and computer storage medium
  • CT image generation method and device, electronic equipment and computer storage medium

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Embodiment Construction

[0037] The characteristics and exemplary embodiments of various aspects of the application will be described in detail below. In order to make the purpose, technical solution and advantages of the application clearer, the application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only intended to explain the present application rather than limit the present application. It will be apparent to one skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by showing examples of the present application.

[0038] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and d...

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Abstract

The invention discloses a CT image generation method and device, electronic equipment and a computer storage medium. The method comprises the following steps: carrying out the calibration of an original CT projection image of a detected object, so as to obtain first attenuation projection data; reconstructing the first attenuation projection data to obtain a first image; segmenting the first image to obtain a second image; performing orthographic projection processing on the second image to obtain second attenuation projection data; generating a polynomial fitting function according to the first attenuation projection data and the second attenuation projection data; correcting the first attenuation projection data by using a polynomial fitting function to obtain third attenuation projection data; and reconstructing the third attenuation projection data to generate a target CT image. According to the embodiment of the invention, a good ring artifact removal effect can be obtained on the basis of keeping the detail structure of the original CT image.

Description

technical field [0001] The present application belongs to the technical field of image processing, and in particular relates to a CT image generation method, device, electronic equipment and computer storage medium. Background technique [0002] CT image generation technology obtains the projection data of the object within a certain angle range through the relative movement of the object under inspection and the detector, and reconstructs the projection data into three-dimensional volume data of the object under inspection through an algorithm. During the image acquisition process, due to the inconsistency and nonlinearity of the detector unit response, the projection data will be degraded to a certain extent. After the degraded projection data is reconstructed by the algorithm, artifacts will be generated in the reconstructed image, which will affect the subsequent image processing and analysis. Therefore, the CT image generation process should remove the artifact informa...

Claims

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Application Information

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IPC IPC(8): G06T11/00G06T7/11G06T7/136
CPCG06T11/005G06T7/11G06T7/136G06T2207/10081
Inventor 孙跃文丛鹏
Owner TSINGHUA UNIV
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