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A pet image reconstruction method and imaging system

An image reconstruction and image technology, applied in image enhancement, image analysis, image data processing, etc., can solve the problems of affecting lesions, slow convergence speed, and low image quality, and achieve the goal of removing radial artifacts, improving accuracy, and increasing speed Effect

Active Publication Date: 2020-03-31
SHANGHAI UNITED IMAGING HEALTHCARE
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Problems solved by technology

Slower convergence speed may lead to poor image quality, which affects the detection of lesions, such as tumors, etc.

Method used

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  • A pet image reconstruction method and imaging system
  • A pet image reconstruction method and imaging system
  • A pet image reconstruction method and imaging system

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Embodiment Construction

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings that need to be used in the description of the embodiments. Obviously, the accompanying drawings in the following description are only some examples or embodiments of the present application, and those skilled in the art can also apply the present application to other similar scenarios. It should be understood that these exemplary embodiments are given only to enable those skilled in the relevant art to better understand and implement the present invention, but not to limit the scope of the present invention in any way.

[0023] As indicated in the specification and claims, the terms "a", "an", "an" and / or "the" are not specific to the singular and may include the plural unless the context clearly indicates an exception. Generally speaking, the terms "comprising" and "comprising" only suggest the inclusion of clearly i...

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Abstract

The invention discloses a PET (Positron Emission Tomography) image reconstruction method. The method comprises steps: an anatomical image of a scanned object and PET data are acquired; the anatomical image is subjected to segmentation processing to acquire a segmented image, wherein the segmented image at least comprises a nonzero value target area, and the target area comprises a plurality of voxels; the segmented image is subjected to projection processing, and the projection of the target area on a chordal graph is acquired; based on the segmented image and / or the projection of the target area on the chordal graph, a guided PET data model is acquired; and according to the PET data model, the PET data are reconstructed, and the PET image of the scanned object is acquired.

Description

【Technical field】 [0001] The present application relates to a positron emission tomography (Positron Emission Tomography, hereinafter referred to as PET) system and method, in particular to a computed tomography (CT) image or magnetic resonance (magnetic resonance) image based on PET data and a specific area , MR) image reconstruction system and method for PET images. 【Background technique】 [0002] During positron emission tomography (PET), due to the low activity of the contrast agent in the lung, when conventional reconstruction algorithms are used to reconstruct the PET image, the low activity area converges slowly. Slower convergence speed may lead to poor image quality, which affects the detection of lesions, such as tumors. Therefore, there is a need for a PET image reconstruction method that accelerates the convergence speed of lung images and improves image quality, and can improve the contrast of small tumors in PET images and the detection rate of small tumors. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T5/00G06T7/11
CPCG06T5/002G06T5/006G06T7/11G06T2207/10081
Inventor 朱闻韬李弘棣
Owner SHANGHAI UNITED IMAGING HEALTHCARE
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