Dynamic contrast-enhanced magnetic resonance imaging method and system

A technology of magnetic resonance imaging and dynamic contrast, applied in magnetic resonance measurement, measurement of magnetic variables, medical science, etc., can solve the problem of low quality of magnetic resonance images

Inactive Publication Date: 2013-04-10
SHENZHEN INST OF ADVANCED TECH
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  • Abstract
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  • Application Information

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[0005] Based on this, it is necessary to provide a dynamic contrast-enhanced magnetic resonance imaging me

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  • Dynamic contrast-enhanced magnetic resonance imaging method and system
  • Dynamic contrast-enhanced magnetic resonance imaging method and system
  • Dynamic contrast-enhanced magnetic resonance imaging method and system

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Embodiment Construction

[0044] like figure 1 As shown, in one embodiment, the dynamic contrast-enhanced magnetic resonance imaging method includes the steps of:

[0045] Step S10: Scan and obtain K-space data. The scanning signal emitted by the radio frequency coil of the magnetic resonance equipment (such as the breast) is received and the K-space data is obtained.

[0046] Step S20: performing nonlinear image reconstruction on the K-space data to obtain a reconstructed image.

[0047] In this embodiment, the signal released by the tissue to be inspected is received during the dynamic scanning of the image to obtain K-space data, and nonlinear image reconstruction is performed according to the K-space data to obtain a reconstructed image.

[0048] Step S30: performing support detection on the reconstructed image or the sparse coefficients of the reconstructed image.

[0049] In this embodiment, the dynamic MRI image is sparse in the space domain and the time-frequency domain (x-f), which is prior...

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Abstract

The invention relates to a dynamic contrast-enhanced magnetic resonance imaging method and a dynamic contrast-enhanced magnetic resonance imaging system. The dynamic contrast-enhanced magnetic resonance imaging method comprises the following steps of: scanning and obtaining K space data; conducting nonlinear image reconstruction on the K space data to obtain reconstructed images; conducting support detection on the reconstructed images or the sparsity coefficient of the reconstructed images; repetitively iterating image reconstruction and the support detection to convergence; and generating magnetic resonance images. By adopting the dynamic contrast-enhanced magnetic resonance imaging method and the dynamic contrast-enhanced magnetic resonance imaging system, since reconstructed images and supports are obtained by repetitively iterating the image reconstruction and the support detection to convergence and the supports are updated to image reconstruction conducted at the next iteration, the support information obtained through detection is more, the measuring data contained by signals used for reconstructing precise images is less, the scanning time is shortened and the goal of improving the image quality is achieved.

Description

technical field [0001] The present invention relates to magnetic resonance imaging technology, in particular to a dynamic contrast enhanced magnetic resonance imaging method and system. Background technique [0002] Magnetic Resonance Imaging MRI (Magnetic Resonance Imaging) is another major advance in medical imaging diagnostic technology after computed tomography (CT). The biomagnetic nuclear spin imaging technology of the spin motion characteristics of a specific atomic nucleus in human tissue and the nuclear magnetic resonance phenomenon has the characteristics of no trauma, no ionizing radiation and high tissue contrast. As a widely used diagnostic technique at present, MRI can obtain both morphological information and functional information of the examination site, and has unparalleled advantages compared with other techniques, and has become an important means of medical imaging examination today. [0003] In recent years, the dynamic contrast-enhanced magnetic reson...

Claims

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Application Information

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IPC IPC(8): A61B5/055G01R33/561
CPCG01R33/561A61B5/055G01R33/56308G01R33/20
Inventor 梁栋张娜刘新郑海荣
Owner SHENZHEN INST OF ADVANCED TECH
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