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Scanning trajectory design method for MRI (magnetic resonance imaging) and device thereof

A technology of magnetic resonance imaging and scanning trajectory, which is applied in the direction of using nuclear magnetic resonance imaging system for measurement, magnetic resonance measurement, and measurement equipment, which can solve the problem of long time for traversing k-space, etc., so as to facilitate physical realization and meet constraints , the effect of good irrelevance

Inactive Publication Date: 2017-04-26
GUANGDONG UNIV OF TECH
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Problems solved by technology

Random trajectories, while producing noise-like artifacts, take too long to traverse k-space

Method used

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  • Scanning trajectory design method for MRI (magnetic resonance imaging) and device thereof
  • Scanning trajectory design method for MRI (magnetic resonance imaging) and device thereof
  • Scanning trajectory design method for MRI (magnetic resonance imaging) and device thereof

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Embodiment Construction

[0045] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0046] The flow chart of a specific embodiment of the scanning trajectory design method for magnetic resonance imaging provided by the present invention is as follows figure 1 As shown, the method includes:

[0047] Step S101: generating a Rosette sampling trajectory;

[0048] Step S102: intercepting a section of single track from the generated Rosette sampling track;

[0049] Step S103: Rotate the single t...

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Abstract

The invention discloses a scanning trajectory design method for MRI (magnetic resonance imaging) and a device thereof. According to the technical scheme of the invention, the method comprises the steps of generating a Rosette sampling track; intercepting a section of a single track from the generated Rosette sampling track; rotating the single track about an origin to obtain a K-space scanning track; adopting the K-space scanning track as a scanning track for compressed perceptual magnetic resonance imaging or spectrum imaging, and collecting magnetic resonance signals. According to the technical scheme of the invention, based on the scanning trajectory design method for MRI (magnetic resonance imaging) and the device thereof, the Rosette track is introduced into the compressed perceptual magnetic resonance imaging process, so that the physical realization of magnetic resonance having a continuous gradient is realized conveniently. In addition, the method and the device are better in incoherence. Therefore, the constraint condition of the compressed perceptual magnetic resonance imaging process can be met and the feature of variable-density sampling is realized.

Description

technical field [0001] The invention relates to the technical field of sampling, in particular to a scanning trajectory design method and device for magnetic resonance imaging. Background technique [0002] The k-space scanning trajectory is a very important factor affecting the quality of magnetic resonance imaging, which describes the collection path of magnetic resonance signals in k-space. Different sampling paths use different reconstruction algorithms, resulting in different image artifacts. Therefore, for different imaging objects, many different trajectories have been proposed successively, such as Cartesian line (Cartesian line), spoke (radial), echo planar imaging (EPI), spiral (spiral), random (stochastic), rosette (rosette) ) and other integrated tracks such as TWIRL, WHIRL, etc. These trajectories are all capable of acquiring MR signals, but exhibit completely different characteristics in terms of acquisition speed, spectral selectivity, types of artifacts, an...

Claims

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Application Information

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IPC IPC(8): G01R33/54G01R33/56G06T11/00
CPCG01R33/54G01R33/56G01R33/5608G06T11/003
Inventor 李亚刘庆凌永权
Owner GUANGDONG UNIV OF TECH
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