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Image reconstruction method, system and computer readable medium

A technology of image reconstruction and image data, which is applied in computing, image enhancement, image analysis, etc., can solve the problems of motion artifacts and noise in CT images, and achieve the effects of reducing motion artifacts, reducing noise, and reducing artifacts

Active Publication Date: 2021-03-30
SHANGHAI UNITED IMAGING HEALTHCARE
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

During scanning, the movement of objects may cause motion artifacts and / or noise in CT images reconstructed using iterative reconstruction techniques

Method used

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  • Image reconstruction method, system and computer readable medium
  • Image reconstruction method, system and computer readable medium
  • Image reconstruction method, system and computer readable medium

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Embodiment

[0116] The following examples are provided for purposes of illustration and are not intended to limit the scope of the application.

[0117] Figure 10 It is an exemplary image of the intestine reconstructed based on raw data according to some embodiments of the present application. Based on raw data (eg projection data) about the intestine, the image about the intestine is reconstructed by performing an iterative reconstruction technique. Motion artifacts are present in the areas indicated by arrows A, B and C in the image.

[0118] Figure 11 According to some embodiments of the application shown based on the weighting matrix and Figure 10 Exemplary images of the intestine reconstructed from raw data applied in . Based on the first set of data about the intestine, the image about the intestine is reconstructed by performing an iterative reconstruction technique. The first set of data is determined by processing raw data about the intestine using a weighting matrix. Mo...

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Abstract

The present application discloses a method, system and computer readable medium for image reconstruction. The method includes obtaining image data, wherein the image data can be generated by the detector array. A weighting window may be determined based on at least one parameter of the detector array. A first set of data may be determined based on the image data and the weighting window. An objective function related to the target image may be determined based on the first set of data, wherein the objective function may include a first model, and the first model may represent a relationship between the target image and the first set of data and the first model can be identified based on the first set of data. The target image may be reconstructed by performing a plurality of iterations based on the target function.

Description

technical field [0001] The present application relates to image reconstruction, in particular to a system and method for iterative reconstruction based on computed tomography image data. Background technique [0002] Computed tomography (CT) uses computer processing to combine X-ray images obtained from multiple angles to produce tomographic images. Iterative reconstruction techniques are widely used in CT image reconstruction. During a scan, movement of objects may cause motion artifacts and / or noise in CT images reconstructed using iterative reconstruction techniques. Accordingly, it would be desirable to provide systems and methods for reducing or eliminating motion artifacts and / or noise in image reconstruction. Contents of the invention [0003] One aspect of the present application relates to an image reconstruction method. The method includes obtaining image data, wherein the image data can be generated by the detector array; determining a weighting window based ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T11/00G06T5/00
CPCG06T11/003G06T11/005G06T2207/10081G06T5/70G06T11/006G06T2211/412G06T2211/424G06T2210/41
Inventor 曹文静
Owner SHANGHAI UNITED IMAGING HEALTHCARE