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Magnetic resonance parallel imaging method and magnetic resonance imaging system

A technology of magnetic resonance imaging and imaging methods, which is applied in the fields of measuring magnetic variables, medical science, measuring devices, etc., can solve the problems of motion artifacts and errors in images, and achieve the effects of reducing errors, improving quality, and removing signal noise.

Active Publication Date: 2017-04-26
SHANGHAI UNITED IMAGING HEALTHCARE
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, during the MRI scanning process, if the subject’s scanning area moves, errors will occur in the K-space acquisition data including the ACS data line, and the final image will produce motion artifacts

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  • Magnetic resonance parallel imaging method and magnetic resonance imaging system
  • Magnetic resonance parallel imaging method and magnetic resonance imaging system
  • Magnetic resonance parallel imaging method and magnetic resonance imaging system

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Embodiment Construction

[0070] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings that need to be used in the description of the embodiments. Obviously, the accompanying drawings in the following description are only some examples or embodiments of the present application, and those skilled in the art can also apply the present application to other similar scenarios. It should be understood that these exemplary embodiments are given only to enable those skilled in the relevant art to better understand and implement the present application, but not to limit the scope of the present application in any way.

[0071] Such as Figure 1a , is a schematic structural diagram of a magnetic resonance imaging system according to an embodiment of the present application. The magnetic resonance imaging system may include a scanning imaging device 110 and an input / output device 120 . When performing scanning ima...

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Abstract

The application discloses a magnetic resonance parallel imaging method. The method comprises: a target region is excited by using a radio-frequency pulse and a plurality of RF coils are used for collecting a magnetic resonance signal of the target region; phase coding is carried out on the magnetic resonance signal to obtain a plurality of data lines and K space is filled with the plurality of data lines, wherein the K space includes an all-sampling region and an under-sampling region; an intermediate image is obtained based on the data lines in the all-sampling region and pretreatment is carried out on the intermediate image; on the basis of the intermediate image after pretreatment, a correction data line in the all-sampling region is obtained; according to the correction data line in the all-sampling region, data lines of the under-sampling region are reconstructed and a synthesized K space data set is obtained; and according to the synthesized K space data set, a magnetic resonance image of a target region of a subject is obtained. With the method, the motion artifact can be suppressed; and the image quality can be improved. In addition, the application also provides a magnetic resonance imaging system.

Description

[0001] 【Technical field】 [0002] The present application relates to the technical field of magnetic resonance imaging for medical diagnosis, in particular to a magnetic resonance parallel imaging method and a magnetic resonance imaging system. [0003] 【Background technique】 [0004] Magnetic Resonance Imaging (MRI) technology has the characteristics of non-invasiveness, no ionization, and radiation. The images obtained by it are clear, fine, high-resolution, and good in contrast, especially for soft tissue layers. diagnostic efficiency. As the front end of the receiving chain, the radio frequency (Radio Frequency, RF) receiving coil plays a very important role in the image quality and directly affects the image signal-to-noise ratio. Magnetic resonance parallel imaging technology is a new imaging technology developed in recent years. It is based on multi-channel phased array coils and has the characteristics of high signal-to-noise ratio and high image spatial resolution. ...

Claims

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Application Information

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IPC IPC(8): G01R33/385A61B5/055
CPCA61B5/055G01R33/385
Inventor 丁彧何任杰
Owner SHANGHAI UNITED IMAGING HEALTHCARE
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