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A pet attenuation correction method and device

An attenuation correction and attenuation unit technology, applied in the field of medical image processing, can solve the problems of large attenuation correction errors of pseudo CT images and unsatisfactory PET attenuation correction effects, and achieve the effects of improving quality, avoiding errors, and high matching accuracy

Active Publication Date: 2021-11-30
SHENYANG INTELLIGENT NEUCLEAR MEDICAL TECH CO LTD
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Problems solved by technology

However, the pseudo CT image obtained by this method contains large attenuation correction errors, and the effect of PET attenuation correction is not ideal

Method used

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  • A pet attenuation correction method and device
  • A pet attenuation correction method and device
  • A pet attenuation correction method and device

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Embodiment Construction

[0025] 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 disclosure. Rather, they are merely examples of apparatuses and methods consistent with aspects of the present disclosure as recited in the appended claims.

[0026] The multimodal medical image may include at least two types of medical images obtained by scanning the same subject. For example, a PET image and an MRI image of the same subject may be obtained through a multimodal imaging device PET / MRI. Since the information provided by the MRI image is proton density and relaxation time, which is not directly related to the attenuation abili...

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Abstract

The present disclosure provides a PET attenuation correction method and device, wherein the method includes: segmenting the MRI image of the subject to obtain MRI sub-images corresponding to each attenuation unit of the subject; for each of the MRI sub-images : Search and match by MRI-CT atlas to obtain CT sub-images corresponding to the MRI sub-images; splicing the CT sub-images corresponding to each MRI sub-image respectively to obtain a pseudo-CT image corresponding to the MRI image of the subject ; Perform attenuation correction on the PET image of the subject according to the pseudo CT image. The present disclosure improves the quality of PET attenuation correction.

Description

technical field [0001] The present disclosure relates to medical image processing technology, in particular to a PET attenuation correction method and device. Background technique [0002] A multi-modal medical image may be an image obtained by scanning an object by a multi-modal imaging device, and may generally include at least two types of medical images obtained on the same object, for example, PET / CT, PET / MRI, etc. . Taking PET / MRI as an example, the PET / MRI device is a new type of multi-modal imaging device, which can obtain PET images and MRI images of the same subject. Compared with single-modal medical images (for example, a single PET, MRI or CT, etc.), multi-modal medical images can provide more tissue structure and other detailed information, and at least two types of multi-modal Image information is used comprehensively to obtain more and more accurate image information. For example, in the use of PET / MRI equipment, the information of MRI images can be used i...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T11/00
CPCG06T11/005G06T11/008G06T2210/41A61B6/032A61B6/5235G06T5/50G06T2207/10081G06T2207/10084G06T7/30A61B5/0035A61B5/055A61B2576/00A61B6/5205G06T2207/10088A61B6/037G16H30/40G06V10/751G06T7/11G06T2207/10104G06T2207/20128G06T11/003
Inventor 李运达刘月
Owner SHENYANG INTELLIGENT NEUCLEAR MEDICAL TECH CO LTD