Image reconstruction method and device, console device and PET (positron emission tomography) system

A technology for image reconstruction and image reconstruction, which is applied in the field of PET system and image reconstruction, and can solve the problems of reduced system total coincidence count rate and reduced system sensitivity

Active Publication Date: 2020-01-14
SHENYANG INTELLIGENT NEUCLEAR MEDICAL TECH CO LTD
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Problems solved by technology

In the process of image reconstruction, related technologies filter out the single-event data corresponding to the Compton scattering events in the crystal according to the energy size, and us

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  • Image reconstruction method and device, console device and PET (positron emission tomography) system
  • Image reconstruction method and device, console device and PET (positron emission tomography) system
  • Image reconstruction method and device, console device and PET (positron emission tomography) system

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[0041] 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.

[0042] 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

An embodiment of the invention provides an image reconstruction method and device, a console device and a PET (positron emission tomography) system. According to the embodiment, first scanning data corresponding to a Compton scattering event in each crystal and second scanning data with the energy value exceeding a preset first energy threshold are recognized from acquired PET scanned data, as foreach group of first scanned data, first single-event data matched with the first scanned data are found out of the second scanned data, coincidence event data recovered by Compton scattering events in crystals are obtained according to the first scanned data and first single-event data matched with the first scanned data, and image reconstruction is performed according to data corresponding to coincidence events in the second scanned data and coincidence event data recovered by the Compton scattering events in crystals to obtain reconstructed images. The Compton scattering events in crystalsare recovered into coincidence events, the counting rate of coincidence events in regions of interest is increased, and the system sensitivity is improved.

Description

technical field [0001] The present invention relates to the technical field of medical image processing, in particular to an image reconstruction method, device, console equipment and PET system. Background technique [0002] Positron Emission Tomography (PET) technology is one of the current popular medical imaging technologies. Positron emission tomography (TOF-PET) based on Time of Flight (TOF) technology is an important direction of technological development in the field of nuclear medicine. Compared with traditional PET imaging, it can provide clearer images. [0003] The PET detector is used to detect high-energy photons emitted from the subject during the scanning process of the PET system, and generate PET scanning data based on the detection results. The PET scan data includes not only the single-event data corresponding to the coincidence event, but also the single-event data corresponding to the Compton scattering event in the crystal. In the process of image re...

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Application Information

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IPC IPC(8): A61B6/03G06T11/00A61B6/00
CPCA61B6/037G06T11/003A61B6/5211A61B6/5205A61B6/54A61B6/5282G06T11/005A61B6/4233G06T2210/41
Inventor 张如美杨龙高鹏梁国栋张军
Owner SHENYANG INTELLIGENT NEUCLEAR MEDICAL TECH CO LTD
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