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A method and device for delay scanning of pet

A technology of delayed scanning and CT scanning, which is applied in the field of PET delayed scanning, can solve the problems that the image quality needs to be improved, and the correction effect cannot be realized, so as to achieve the effect of improving quality and accurate attenuation correction

Active Publication Date: 2021-05-07
SHENYANG INTELLIGENT NEUCLEAR MEDICAL TECH CO LTD
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Problems solved by technology

However, the above method cannot achieve a good correction effect, and the image quality needs to be improved

Method used

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  • A method and device for delay scanning of pet
  • A method and device for delay scanning of pet
  • A method and device for delay scanning of pet

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Embodiment Construction

[0036] 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.

[0037] Before the PET examination, the patient can be injected with radiopharmaceuticals, and the photons produced by the radiopharmaceuticals in the patient's body are detected when the radiation is annihilated, and the PET image can be obtained by image reconstruction based on the detected PET data. However, during the PET imaging process, due to the influence of attenuation factors ...

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Abstract

The present disclosure provides a method and device for delayed PET scan, wherein the method includes: obtaining a first attenuation map and an initial attenuation map through a first scan, the first scan includes a PET scan and a CT scan, and a CT image obtained by the CT scan Convert to obtain the first attenuation map, reconstruct the initial attenuation map from the first attenuation map or the PET data obtained by the PET scan; obtain the estimated attenuation map through the second scan; determine the initial attenuation map obtained from the first scan and the second The pixel displacement relationship between the estimated attenuation maps obtained by scanning; the second attenuation map applied to the second scan is obtained according to the relationship between the first attenuation map and the pixel displacement; the PET data obtained from the second scan is compared according to the second attenuation map Attenuation correction was performed, and the PET image was reconstructed.

Description

technical field [0001] The present disclosure relates to medical imaging technology, in particular to a method and device for PET delayed scanning. Background technique [0002] With the advancement of science and technology and the continuous innovation of products, positron emission and X-ray computed tomography equipment (PET / CT, Positron Emission Tomograph / Computer Tomography) is more and more widely used by hospitals. Pre-screening has played a positive role. According to clinical surveys, there are nearly 70% of PET / CT examinations, and patients need PET delayed scans, that is, after a PET scan and a CT scan, the patient needs to undergo a PET scan and a CT scan again at intervals, so that the patient not only suffers from Radiation doses from radiopharmaceuticals, but also increased radiation from CT scans. [0003] In order to reduce the radiation dose received by the patient, in the current technology, the CT scan can no longer be performed during the delayed PET ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B6/03
CPCA61B6/037
Inventor 刘月孙智鹏李明吕斌
Owner SHENYANG INTELLIGENT NEUCLEAR MEDICAL TECH CO LTD
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