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A radiographic imaging method and system thereof

A technology for radiographic imaging and image generation, which is applied in the fields of radiological diagnostic equipment, medical science, and diagnosis, and can solve problems such as clinical CT misdiagnosis and image resolution reduction

Active Publication Date: 2021-05-11
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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  • A radiographic imaging method and system thereof
  • A radiographic imaging method and system thereof
  • A radiographic imaging method and system thereof

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Embodiment Construction

[0018] 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.

[0019] 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. Words such as "a" and "an" do not denote a limitation of number, but mean that there is at least one. Words such as "or" are inclusive and refer to one or all of the listed items. "Has", "comprises" or "comprising" and similar words means that th...

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Abstract

The invention discloses a radiation imaging method, which comprises the following steps: transmitting a beam to an object through a radiation source; detecting the beam passing through the object through a detector, and outputting projection data; determining that the object is along the position of the beam; determining a convolution kernel based on the position of the object; estimating a scatter distribution based on the convolution kernel; correcting the projection data based on the scatter distribution; and generating an image using the corrected projection data . The scatter distribution can be estimated more accurately and results in a sharper image.

Description

Background technique [0001] The present invention relates to a radiation imaging technology, more specifically a radiation imaging method and system thereof. [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 scattering signal from the object 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, objects being scanned scatter after receiving X-rays. 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 correcte...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B6/03
CPCA61B6/032A61B6/4266A61B6/5205A61B6/5282
Inventor 吴明烨金燕南布鲁诺·克里斯蒂安·伯纳德·迪曼杰德·道格拉斯·派克
Owner GENERAL ELECTRIC CO