Positron emission tomography system and image reconstruction method thereof

A technology of positron emission and tomography, used in radiological diagnostic image/data processing, computed 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: 2017-07-21
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 thereof
  • Positron emission tomography system and image reconstruction method thereof
  • Positron emission tomography system and image reconstruction method thereof

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[0036] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the specific embodiments of the present invention will be described in detail below with reference to 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 different from those described here, so the present invention is not limited by the specific embodiments disclosed below.

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

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Abstract

The invention provides a positron emission tomography (PET) system and an image reconstruction method thereof. The PET system comprises a plurality of detector units arranged in the axial direction, and a plurality of coincidence logic circuits. Each detector unit is suitable for generating multiple single event counts; each coincidence logic circuit is connected to one or more corresponding detector units, wherein single event data generated by each detector unit is sent to the corresponding coincidence logic circuit, and the coincidence logic circuits generate coincidence counts of the detector units in parallel.

Description

Technical field [0001] The present invention mainly relates to medical image diagnosis equipment, in particular to a 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. It has now played an important role in medical biological research and clinical diagnosis and processing. [0003] PET is a diagnostic technology that reflects the function and metabolic status of the internal organs and tissues from the human molecular level. PET will contain positron radioactive drugs (such as 18 F-FDG) is injected into the human body. Because the metabolism of FDG is very similar to that of glucose, it can accumulate in the cells that digest glucose, especially the drug uptake of fast-growing tumor tissues. 18 The positive electrons emitted by the F decay will annihilate the negative electrons in the tissue to produce two gamma phot...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B6/03A61B6/00G06T7/00
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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