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Short T2 tissue imaging method and system and magnetic resonance imaging system

An imaging method and imaging system technology, which is applied in the direction of using nuclear magnetic resonance imaging system for measurement, magnetic resonance measurement, and magnetic variable measurement, can solve problems such as motion sensitivity, and achieve short duration, high time efficiency, and small time increment Effect

Active Publication Date: 2021-06-11
SIEMENS SHENZHEN MAGNETIC RESONANCE
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, the total scan time is approximately three times that of a single echo PETRA and is therefore more sensitive to motion

Method used

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  • Short T2 tissue imaging method and system and magnetic resonance imaging system
  • Short T2 tissue imaging method and system and magnetic resonance imaging system
  • Short T2 tissue imaging method and system and magnetic resonance imaging system

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Embodiment Construction

[0032] In the embodiment of the present invention, in order to achieve the effect of double-echo PETRA, that is, to obtain images containing only short T2 tissues, and not consume too much total scanning time like double-echo PETRA, it is considered to combine T2 preparation pulse clusters into In single-echo PETRA, short T2 tissues appear dark due to T2 attenuation due to the appearance of T2 preparation pulse clusters, while long T2 tissues have limited signal decline. Therefore, based on a single echo PETRA pulse sequence, MRI images including short T2 tissues can be acquired first; then T2 preparation pulse clusters can be added at a certain interval between PETRA pulses to suppress short T2 tissues, and then acquisitions that do not include short T2 For the magnetic resonance image of the tissue, the magnetic resonance image including only the short T2 tissue can be obtained by subtracting the magnetic resonance image not including the short T2 tissue from the magnetic res...

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Abstract

The embodiment of the invention discloses a short T2 tissue imaging method and system and a magnetic resonance imaging system. The method comprises the following steps of based on point-by-point coding time reduction and radial acquisition of a PETRA sequence, acquiring a magnetic resonance image comprising a short T2 tissue to obtain a first image, applying a T2 preparation pulse cluster between the PETRA sequences according to a predetermined application interval of the T2 preparation pulse cluster used for suppressing a short T2 tissue signal, and acquiring a magnetic resonance image not including the short T2 tissue based on the PETRA sequences after the T2 preparation pulse cluster is applied to obtain a second image, and subtracting the second image from the first image to obtain a magnetic resonance image of the short T2 tissue. According to the technical scheme, the magnetic resonance image of the short T2 tissue can be obtained.

Description

technical field [0001] The invention relates to the field of magnetic resonance imaging, in particular to a short T2 tissue imaging method, a short T2 tissue imaging system and a magnetic resonance imaging system. Background technique [0002] Magnetic resonance imaging is a technique that uses the phenomenon of magnetic resonance to perform imaging. The principle of magnetic resonance phenomenon mainly includes: atomic nuclei containing a single number of protons, such as hydrogen nuclei widely present in the human body, the protons have spin motion, just like a small magnet, and the spin axes of these small magnets have no certain rules. External magnetic field, these small magnets will be rearranged according to the magnetic force lines of the external magnetic field, specifically in two directions parallel to or antiparallel to the magnetic force lines of the external magnetic field, and the above-mentioned direction parallel to the magnetic force lines of the external m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R33/561A61B5/055
CPCG01R33/5616A61B5/055A61B5/6829A61B5/4523G01R33/5602G01R33/4824G01R33/561G01R33/50
Inventor 董芳周堃
Owner SIEMENS SHENZHEN MAGNETIC RESONANCE
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