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Image reconstruction method and device, CT equipment and CT system

An image reconstruction and image technology, which is applied in the field of medical image processing, can solve the problems of poor reconstructed image quality and poor compensation quality, and achieve the effects of improving compensation quality, reducing influence, and reducing motion artifacts

Active Publication Date: 2020-01-17
NEUSOFT MEDICAL SYST CO LTD
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Problems solved by technology

Due to the variability of motion in cardiac reconstruction, the compensation direction selected in this method has poor compensation quality for some positions with complex motion states, resulting in poor quality of reconstructed images after compensation.

Method used

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  • Image reconstruction method and device, CT equipment and CT system
  • Image reconstruction method and device, CT equipment and CT system
  • Image reconstruction method and device, CT equipment and CT system

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[0038] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present invention. Rather, they are merely examples of apparatuses and methods consistent with aspects of the embodiments of the invention as recited in the appended claims.

[0039] Terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments of the present invention, and are not intended to limit the embodiments of the present invention. As used in the embodiments of the present invention and the appended claims, the singular forms "a", "said" and "the" are also intended to include the plural f...

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Abstract

The embodiment of the invention provides an image reconstruction method and device, CT equipment and a CT system. According to the embodiment of the invention, the method comprises the steps: obtaining an initial compensation image obtained through the reconstruction of an original image after compensation in a plurality of initial compensation directions; calculating an image gradient variance ofeach initial compensation image; determining a weighting coefficient corresponding to the initial compensation direction; according to the direction vector of each initial compensation direction andthe corresponding weighting coefficient, determining the target compensation direction, compensating the original image in the target compensation direction and then reconstructing to obtain the target reconstructed image, thus the optimal compensation direction can be obtained to compensate and reconstruct the image, the compensation quality is improved, the influence of motion artifacts is reduced, and the image quality of the reconstructed image is improved.

Description

technical field [0001] The invention relates to the technical field of medical image processing, in particular to an image reconstruction method, device, CT equipment and CT system. Background technique [0002] Computed Tomography (CT) coronary artery (coronary artery) angiography is a safe and non-invasive imaging technique widely used in clinical practice. It can accurately diagnose cardiovascular-related diseases and is a popular research direction in cardiac imaging. Since the heart is always in motion during CT scanning, the acquired CT images contain certain motion artifacts, which have a great impact on image quality. [0003] In order to improve image quality, it is necessary to perform motion compensation on the original image obtained by CT scanning, and then perform image reconstruction, that is, reconstruction after compensation. In the related technology, the compensation direction is selected in the four domain directions of the xy plane of the reconstruction...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T17/00G06T7/00
CPCG06T17/00G06T7/0012G06T2207/10081
Inventor 佟丽霞
Owner NEUSOFT MEDICAL SYST CO LTD
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