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Fast-diffused magnetic resonance imaging and restoring method

A magnetic resonance imaging, fast technology, applied in the direction of magnetic resonance measurement, using nuclear magnetic resonance imaging system for measurement, measuring magnetic variables, etc., can solve the problem of reducing data acquisition time, etc., to reduce image imaging time, improve resolution and The effect of signal-to-noise ratio and improving sampling efficiency

Inactive Publication Date: 2013-02-13
TSINGHUA UNIV
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Problems solved by technology

So far, there is no reliable imaging and reconstruction method that can reduce data acquisition time while maintaining image signal-to-noise ratio and resolution

Method used

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  • Fast-diffused magnetic resonance imaging and restoring method
  • Fast-diffused magnetic resonance imaging and restoring method
  • Fast-diffused magnetic resonance imaging and restoring method

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Embodiment Construction

[0039]Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0040] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner" and "outer" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and Simplified descriptions, rather than indicating or implying that the device or element refer...

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Abstract

The invention discloses a fast-diffused magnetic resonance imaging and restoring method. The method comprises the following steps: (S1) conducting signal collection to a detected target in N diffusion weighting directions through a plurality of channel coils; (S2) merging the obtained complementary k space data so as to obtain fully-sampled k space data KC; (S3) conducting primary restoration based on images of different diffusion weighting directions corresponding to the k space data and images corresponding to the fully-sampled k space data KC so as to obtain a primary image; and (S4) conducting regularization restoration based on the primary image, iterating to convergence so as to obtain the final needed images (I1,....IN). The description gives a specific realization mode of the method. Common information among images in different diffusion weighting directions are utilized, so that not only the sampling efficiency is improved, but also the resolution and signal to noise ratio of the images can be enhanced.

Description

technical field [0001] The invention relates to the technical field of magnetic resonance imaging, in particular to a fast diffusion magnetic resonance imaging and reconstruction method with high resolution and high signal-to-noise ratio. Background technique [0002] Diffusion imaging technology in magnetic resonance imaging is currently the only imaging method for measuring the diffusion movement of water molecules in vivo. It senses the microscopic movement of water molecules by applying diffusion gradients along multiple directions to detect the microstructure of tissues, which can obtain structural information, It can also generate functional information, so this technology has been developed rapidly in the past decade, and has gradually become an important routine clinical examination and scientific research tool. The use of diffusion gradients in diffusion imaging makes the technique exceptionally sensitive to coherent motion, requiring fast imaging to reduce the dama...

Claims

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Application Information

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IPC IPC(8): G01R33/56G01R33/561
CPCG01R33/5611G01R33/4824G01R33/56341
Inventor 郭华黄峰马晓栋
Owner TSINGHUA UNIV
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