PET (positron emission computed tomography) imaging method and PET imaging system
An imaging method, scanning imaging technology, applied in the field of digital medicine, can solve the problem of low image quality and achieve the effect of improving imaging quality
Active Publication Date: 2017-08-29
SHANGHAI UNITED IMAGING HEALTHCARE
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[0004] In view of this, the embodiment of the present invention provides a PET imaging method and system to solve the problem in the prior art that the PET image is affected by the amplitude of breathing motion, resulting in low image quality
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[0058] In order to better understand the technical solutions of the present invention, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0059] It should be clear that the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0060] Terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit 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 forms unless the context clearly indicates otherwise.
[0061] It should be understood that the term "an...
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An embodiment of the invention provides a PET (positron emission computed tomography) imaging method and a PET imaging system. The method includes: enabling an examination bed to move along a scanning cavity of PET scanning equipment to acquire a plurality of PET subdata sets of corresponding organ parts, scanned at multiple bed positions, of a subject and acquire motion signals in scanning of the corresponding organ parts at each bed position; acquiring gating phases according to the motion signals; subjecting the PET subdata sets to gating reconstruction according to the gating phases to acquire PET images, in one or more gating phases, of the corresponding organ parts scanned at each bed position; subjecting the PET images corresponding to the gating phases identical in sequence to image stitching; determining gating number on the basis of respiratory movement amplitude. Therefore, pertinent gating reconstruction of different organ parts can be realized, and PET imaging quality is effectively improved as image stitching is carried out on the basis of respiratory movement amplitude.
Description
【Technical field】 [0001] The present invention relates to the field of digital medical technology, in particular to a PET imaging method and system. 【Background technique】 [0002] During the PET (Positron Emission Computed Tomography, Positron Emission Computed Tomography) process, the respiratory movement of the patient will reduce the image quality, thus affecting the doctor's diagnosis work. In order to reduce the impact of respiratory motion on PET image quality and improve the accuracy of PET image diagnosis, a variety of respiratory motion correction methods have been proposed by those skilled in the art, among which the respiratory motion gating method is the most widely used. The principle of this method is to use the respiratory motion signal to divide the respiratory motion cycle into different phases, then combine the scan data of the same phase, and obtain the PET image corrected by the respiratory motion gating through three-dimensional reconstruction. [0003...
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IPC IPC(8): A61B6/03
CPCA61B6/037A61B6/5205A61B6/5264
Inventor 王骥喆冯涛李弘棣孙友军
Owner SHANGHAI UNITED IMAGING HEALTHCARE