Magnetic resonance signal acquisition method, imaging method, system and medium

A technology of magnetic resonance signal and acquisition method, which is applied in the direction of using nuclear magnetic resonance imaging system for measurement, magnetic resonance measurement, measurement of magnetic variables, etc., and can solve problems such as lack of motion characterization characteristics

Active Publication Date: 2019-01-04
SHANGHAI UNITED IMAGING HEALTHCARE
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Problems solved by technology

However, in this acquisition method, due to the patient's breathing movement or involuntary movement (swallowing, gastrointestinal peristalsis) or pulsation of blood vessels, etc., it is easy to produce motion artifacts in the scanned image; at the same time, Cartesian acquisition or conventional The radial acquisition of the

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  • Magnetic resonance signal acquisition method, imaging method, system and medium
  • Magnetic resonance signal acquisition method, imaging method, system and medium
  • Magnetic resonance signal acquisition method, imaging method, system and medium

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Embodiment Construction

[0035] In order for those skilled in the art to have a further understanding of the present invention, the present invention is described in detail below.

[0036] figure 1 It is a schematic flowchart of a magnetic resonance signal acquisition method in an embodiment. Such as figure 1 As shown, the present embodiment provides a magnetic resonance signal acquisition method, the method may include the following steps:

[0037] Step S1: Generate an initial linear sampling line in K-space through the origin of the K-space.

[0038] Specifically, K space is also called Fourier space, which is a filling space for raw data of magnetic resonance signals with spatial positioning coding information. Each MRI image has its corresponding K-space data. By performing Fourier transform on the K-space data, the spatial location coding information in the original data can be decoded, and the magnetic resonance signals with different signal intensities can be assigned to the corresponding s...

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Abstract

The invention relates to a magnetic resonance signal acquisition method, a magnetic resonance imaging method, a magnetic resonance system and a computer readable storage medium. The magnetic resonancesignal acquisition method includes the following steps: generating an initial linear sampling line passing through a K-space origin; carrying out rotation around the origin multiple times based on the initial linear sampling line to obtain a K-space radial sampling trajectory; and acquiring magnetic resonance signals according to the K-space radial sampling trajectory. By ensuring that the rotating linear sampling line obtained by the (2*N)th rotation is orthogonal to the rotating linear sampling line obtained by the (2*N+1)th rotation and the rotating linear sampling line obtained by the first rotation is orthogonal to the initial linear sampling line, the acquired magnetic resonance signals have more motion representation characteristics and can represent the current real motion condition of the patient's body, and motion artifacts can be better suppressed.

Description

technical field [0001] The invention relates to the field of magnetic resonance, in particular to a magnetic resonance signal acquisition method, a magnetic resonance imaging method, a magnetic resonance system and a computer-readable storage medium. Background technique [0002] With the continuous development of medical technology, magnetic resonance is becoming more and more familiar to the public. During magnetic resonance imaging, the magnetic resonance system generally applies specific radio frequency pulses to the patient's body under a certain field strength, and the patient's body can feed back the corresponding magnetic resonance signal and be collected by the magnetic resonance system, and then obtain the magnetic resonance scan of the patient's body image. [0003] In the traditional magnetic resonance signal acquisition method, a Cartesian acquisition method is used to acquire the magnetic resonance signal. However, in this acquisition method, due to the patie...

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Application Information

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IPC IPC(8): G01R33/48
CPCG01R33/4826
Inventor 龚小茂谭国陞娄昕马林
Owner SHANGHAI UNITED IMAGING HEALTHCARE
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