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Magnetic resonance imaging method and apparatus

A magnetic resonance imaging and magnetic resonance image technology, applied in the field of medical imaging, can solve the problems of limiting the application of clinical magnetic resonance imaging and long reconstruction time, and achieve the effect of fast image reconstruction and fast reconstruction speed

Active Publication Date: 2021-07-30
SHANGHAI NEUSOFT MEDICAL TECH LTD
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Problems solved by technology

However, the reconstruction time of these existing methods is long, which limits their application in clinical MRI.

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  • Magnetic resonance imaging method and apparatus
  • Magnetic resonance imaging method and apparatus
  • Magnetic resonance imaging method and apparatus

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Embodiment Construction

[0074] At present, magnetic resonance imaging has the characteristics of multi-contrast imaging, and can directly make tomographic images of cross-section, sagittal plane, coronal plane and various oblique planes; moreover, the magnetic resonance images reconstructed by magnetic resonance imaging technology can provide rich , comprehensive information, and a significant contribution to disease diagnosis; in addition, using magnetic resonance imaging technology, there is no need to inject contrast agents, and there is no ionizing radiation. Therefore, based on the above advantages, magnetic resonance imaging is widely used in the process of medical diagnosis. However, magnetic resonance imaging often requires a long scan time, resulting in a slow speed of magnetic resonance imaging, which limits the promotion prospect of magnetic resonance imaging.

[0075] While ensuring the quality of the magnetic resonance image obtained by magnetic resonance imaging, in order to increase th...

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Abstract

The present application discloses a magnetic resonance imaging method and device. The method and device are divided into multiple regions in the k-space phase encoding direction, and different regions can have different acquisition densities during data acquisition. In this way, k ‑space variable density acquisition, and can also make the same area have a uniform acquisition density, so that the k‑space data in the same area can be reconstructed using a conventional parallel reconstruction method, and the final magnetic resonance imaging can be obtained by this The regional images in multiple regions are fused. Therefore, in this application, the total image reconstruction time is equal to the number of divided regions multiplied by the time required by the conventional parallel reconstruction method. Therefore, compared with the magnetic resonance imaging method of variable density acquisition in the prior art, the present application The total image reconstruction time of the embodiment is relatively short, and the reconstruction speed is relatively fast. Therefore, the embodiment of the present application can realize fast image reconstruction of k-space data collected with variable density.

Description

technical field [0001] The present application relates to the technical field of medical imaging, in particular to a magnetic resonance imaging method and device. Background technique [0002] Compared with other imaging equipment, such as computerized tomography (Computed Tomography, CT), positron emission (Positron Emission Computed Tomography, PET), etc., magnetic resonance imaging (Magnetic Resonance Imaging, MRI) is a multi-contrast imaging technology, It can obtain a variety of contrast images, providing richer information for diagnosis. However, MRI requires a long scan time, which limits the acquisition of MRI multi-contrast images. [0003] In order to increase the rate of MRI and reduce the scanning time of MRI, parallel imaging method came into being. [0004] At present, parallel imaging methods widely used in the industry mainly include parallel imaging methods such as Sensitivity Encoding (Sensitivity Encoding, SENSE) and Generalized Autocalibrating Partially...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B5/055
CPCA61B5/055
Inventor 黄峰孙爱琦王一然
Owner SHANGHAI NEUSOFT MEDICAL TECH LTD
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