Positron emission tomography system and image reconstruction method

A technology of positron emission and tomography, which is applied in radiological diagnostic image/data processing, computer tomography scanner, image analysis, etc., can solve the problem of slow imaging speed and achieve the effect of high sensitivity and fast imaging performance

Active Publication Date: 2017-07-25
SHANGHAI UNITED IMAGING HEALTHCARE
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  • Abstract
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Problems solved by technology

[0006]The enlarged field of view will increase the sensitivity dozens of times, but its ultra-high counting rate cannot be handled by the current electronic logic; at the same time, The imaging speed of traditional PET image reconstruction will also be dozens of times slower due to high counts

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  • Positron emission tomography system and image reconstruction method
  • Positron emission tomography system and image reconstruction method
  • Positron emission tomography system and image reconstruction method

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Embodiment Construction

[0036] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0037] In the following description, many specific details are set forth in order to fully understand the present invention, but the present invention can also be implemented in other ways than those described here, so the present invention is not limited by the specific embodiments disclosed below.

[0038] figure 2 is a perspective view of a PET system according to an embodiment of the present invention. refer to figure 2 As shown, the PET system of this embodiment forms a channel 22 in the frame 21, and an examination table 23 can move into or out of the channel 22. The subject lies on the bed surface 24 of the examination bed 23 , and after the examination bed 23 is moved into the channel 22 , the detector array surrounding the...

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Abstract

The invention provides a positron emission tomography (PET) system. The PET system includes a plurality of annular detector units, a plurality of logical circuits and a calculating device, wherein the detector units are sequentially arranged in the axial direction and used for counting single events, the logical circuits are connected with one or more corresponding detector units and used for counting coincidence events, the coincidence events includes the coincidence events obtained by the single detector unit or the coincidence events obtained by two detector units meeting the pairing rule, and the calculating device includes several calculating nodes and is used for randomly receiving the number, obtained after counting, of the coincidence events and conducting image reconstruction.

Description

technical field [0001] The present invention mainly relates to medical image diagnosis equipment, in particular to a positron emission tomography (Positron Emission Tomography, PET) system and an image reconstruction method thereof. Background technique [0002] PET is a relatively advanced clinical examination imaging technology in the field of nuclear medicine, and it has now played an important role in medical biological research and clinical diagnosis and treatment. [0003] PET is a diagnostic technique that reflects the function and metabolism of internal organs and tissues in the human body from the molecular level. PET will contain positron-radiating drugs (such as 18 F-FDG) is injected into the human body. Since the metabolism of FDG is very similar to that of glucose, it can accumulate in the cells that digest glucose, especially the fast-growing tumor tissue has different drug uptake. 18 The positrons released by the F decay will annihilate with the negative ele...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B6/03
CPCA61B6/037A61B6/4208A61B6/44A61B6/52G06T7/0012A61B6/4233A61B6/4266A61B6/5211G06T2207/10104G06T2207/30004G01T1/2985G16H50/20
Inventor 李弘棣董筠吕杨
Owner SHANGHAI UNITED IMAGING HEALTHCARE
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