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Medical scanning imaging method, device, storage medium and computer equipment

A scanning imaging and medical technology, applied in the field of image processing, can solve the problems of scattering estimation error and low accuracy of scattering correction results, and achieve the effect of improving accuracy and avoiding error problems

Active Publication Date: 2021-07-16
SHANGHAI UNITED IMAGING HEALTHCARE
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Problems solved by technology

In the prior art, scatter estimation is usually used for scatter correction, and the scatter estimate is obtained by reconstructing the PET image and attenuation map without scatter correction, that is, it is necessary to obtain the uncorrected image based on the image data, and then obtain The rectified image performs scatter correction on itself, so that there is a certain error in the scatter estimation, resulting in a problem of low accuracy in the final scatter correction result.

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  • Medical scanning imaging method, device, storage medium and computer equipment
  • Medical scanning imaging method, device, storage medium and computer equipment
  • Medical scanning imaging method, device, storage medium and computer equipment

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[0051] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.

[0052] In the PET image reconstruction process, the traditional technique is usually to obtain an uncorrected image based on the scan data after the PET scan is completed, and then perform image reconstruction for scattering correction. The traditional reconstruction formula is:

[0053]

[0054] Among them, where i is the coordinate of the pixel in the image domain, j is the coordinate of the pixel in the projection domain, and H i,j is the system matrix of the scanning system, s j is the scatter estimate, a j is the attenuated chord diagram, r j is a chord diagram ...

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Abstract

The present application relates to a medical scanning imaging method, device, storage medium and computer equipment. In the imaging system, when performing PET image reconstruction, the scattering response function of each pixel is determined and used as relevant parameters for PET image reconstruction. The scatter correction can be implemented in the process of image reconstruction, thereby avoiding the error problem existing in the prior art and improving the accuracy of the scatter correction result.

Description

technical field [0001] The present application relates to the technical field of image processing, in particular to a medical scanning imaging method, device, storage medium and computer equipment. Background technique [0002] PET (Positron Emission Computed Tomography, Positron Emission Computed Tomography) is a relatively advanced clinical examination imaging technology in the field of nuclear medicine. This technology injects substances labeled with radionuclides into the human body, and detects the accumulation of the substances in the metabolism of the human body to reflect the metabolism of human life, so as to achieve the purpose of diagnosis. [0003] When medically scanning a target object according to PET scanning technology or a multi-modal scanning technology including PET scanning, scattering correction needs to be performed on the PET image obtained through image reconstruction processing. In the prior art, scatter estimation is usually used for scatter corre...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T5/00G06T7/11
CPCG06T5/00G06T2207/10081G06T2207/10104G06T2207/20104G06T7/11
Inventor 冯涛王骥喆
Owner SHANGHAI UNITED IMAGING HEALTHCARE
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