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Radiographic method and system therefor

A radiographic and transmittance technology, applied in the field of radiographic imaging methods and systems, can solve the problems of misdiagnosis of clinical CT and reduction of image resolution, etc.

Active Publication Date: 2021-06-18
GENERAL ELECTRIC CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

X-ray scatter in CT scans is the root cause of many types of image artifacts and reduces image resolution, which can lead to misdiagnosis in clinical CT and thus needs to be corrected

Method used

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  • Radiographic method and system therefor
  • Radiographic method and system therefor
  • Radiographic method and system therefor

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Embodiment Construction

[0014] In order to help those skilled in the art to accurately understand the claimed subject matter of the present invention, the specific implementation manners of the present invention will be described in detail below in conjunction with the accompanying drawings. In the following detailed descriptions of these specific embodiments, this specification does not describe some well-known functions or structures in detail to avoid unnecessary details affecting the disclosure of the present invention.

[0015] Unless otherwise defined, the technical terms or scientific terms used in the claims and the description shall have the ordinary meanings understood by those skilled in the technical field to which the present invention belongs. "First", "second" and similar words used in the patent application specification and claims of the present invention do not indicate any sequence, quantity or importance, but are only used to distinguish different components. Likewise, words "a" a...

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Abstract

The invention discloses a radiographic imaging method, comprising the following steps: radiating a beam onto an object through a radiation source; detecting the beam passing through the object through a detector, and outputting projection data; obtaining the scattering intensity when there is no object; obtaining the scattering transmittance when there is an object; calculating the scattering intensity when there is an object based on the scattering intensity when there is no object and the scattering transmittance when there is an object; the projection data; and generating an image using the corrected projection data.

Description

technical field [0001] The present invention relates to a radiation imaging technology, more specifically a radiation imaging method and system thereof. Background technique [0002] Non-invasive imaging techniques, such as computed tomography (CT), can obtain images of the internal structure of an object without destructive manipulation of the object. In CT imaging systems, scattered signals in X-ray measurements can cause shadowing artifacts, reduce image resolution, and cause all other artifacts that degrade image quality. Meanwhile, the scatter signal from the background is one of the main sources of the deviation of the quantitative measurement of the reconstructed image of the CT imaging system. [0003] During a CT scan, even with an anti-scatter grid, the background (such as a butterfly filter, gantry, or other components in the CT system) can scatter after receiving the X-rays. X-ray scatter in CT scans is the root cause of many types of image artifacts and reduce...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B6/03A61B6/06
CPCA61B6/032A61B6/06A61B6/40A61B6/4208A61B6/44A61B6/54
Inventor 吴明烨金燕南布莱恩·爱德华·内特杰德·道格拉斯·帕克
Owner GENERAL ELECTRIC CO