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Cine imaging method and magnetic resonance imaging system

An imaging method and magnetic resonance scanning technology, which is applied in the fields of measurement, magnetic resonance measurement, and medical imaging using nuclear magnetic resonance image systems, can solve problems such as low image quality and serious radial artifacts, and achieve improved image quality and weakened radial artifacts. The effect of artifacts and uniform distribution of angle directions

Active Publication Date: 2020-07-28
SHANGHAI UNITED IMAGING HEALTHCARE
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of this, the embodiment of this solution provides a cine imaging method and a magnetic resonance imaging system to solve the problems of severe radial artifacts and low image quality in cardiac cine imaging in the prior art

Method used

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  • Cine imaging method and magnetic resonance imaging system
  • Cine imaging method and magnetic resonance imaging system
  • Cine imaging method and magnetic resonance imaging system

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Experimental program
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Embodiment 1

[0052] An embodiment of the present invention provides a cine imaging method, which can be applied in the retrospective cine imaging process of magnetic resonance scanning of the heart.

[0053] figure 1 It is an example diagram of the first flow chart of the film imaging method provided by the embodiment of the present invention. Such as figure 1 As shown, in this embodiment, the film imaging method may include the following steps:

[0054] S101. Radially collect magnetic resonance scan data of the heart, and record heartbeat signals corresponding to the magnetic resonance scan data.

[0055] S102. Based on the specified number of phases and the heartbeat signal, allocate the magnetic resonance scan data into corresponding phases.

[0056] S103, for each phase, use the specified magnetic resonance scan data in the adjacent phase of the phase to fill the specified angular interval in the k-space of the phase; when the specified condition is met, obtain the filled-in angular...

Embodiment 2

[0097] An embodiment of the present invention provides a magnetic resonance imaging system, the system includes a processor and a memory; the memory is used to store instructions, and when the instructions are executed by the processor, the system is caused to implement any cine imaging method in the first embodiment.

[0098] Those skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the above-described system, device and module can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

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Abstract

The embodiment of the invention provides a film imaging method and a magnetic resonance imaging system. Heartbeat signals corresponding to data are recorded by collecting the magnetic resonance scanning data of the heart in the radial direction, on the basis of the designated number of phases and the heartbeat signals, the data are distributed into the corresponding phases, and as for each phase,the designated angle interval in a space k of the phase is filled with the designated magnetic resonance scanning data in the adjacent phases of the phase; when the designated condition is met, the data after filling of the phase are obtained as the to-be-reconstructed data; and according to the to-be-reconstructed data, image reconstruction is conducted, a reconstructed image of the phase is obtained, the large angle interval in the space k of the phase is filled with the data of the adjacent phases of the phase, thus angle direction distribution of the space k of the phase tends to be uniform, radial artifacts in the reconstructed image are weakened accordingly, the image quality is improved, and the problem that in the prior art, the image quality during heart film imaging is low is solved to a certain extent.

Description

【Technical field】 [0001] The solution relates to the technical field of magnetic resonance imaging, in particular to a film imaging method and a magnetic resonance imaging system. 【Background technique】 [0002] Radial MRI (Magnetic Resonance Imaging, Magnetic Resonance Imaging) acquisition technology has the advantages of better insensitivity to motion and the like compared with the traditional Cartesian acquisition method. When the angles of two adjacent radial samples increase by the golden angle (111.25°), it is the golden angle radial sampling. Golden angle radial sampling has very special mathematical properties, that is, when any piece of data is intercepted during continuous acquisition, its trajectory in k-space will form a relatively uniform distribution in the angular direction. Due to the advantage of the golden angle radial sampling, it is possible to select any time resolution during reconstruction, unlike the traditional technology that needs to select the nu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R33/48A61B5/055
CPCA61B5/055A61B2576/023G01R33/48
Inventor 刘琦
Owner SHANGHAI UNITED IMAGING HEALTHCARE