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Quantitative magnetic resonance imaging parameter determination method, device and equipment and storage medium

A magnetic resonance imaging and parameter determination technology, which is applied in the directions of using nuclear magnetic resonance imaging system for measurement, magnetic resonance measurement, and magnetic variable measurement, can solve the problem of inaccurate transverse relaxation time and achieve accurate transverse relaxation time, The effect of improving sensitivity

Active Publication Date: 2020-05-01
SHENZHEN INST OF ADVANCED TECH
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Problems solved by technology

[0005] In view of this, the embodiment of the present application provides a quantitative magnetic resonance imaging parameter determination method, device, equipment and storage medium to solve the technical problem of inaccurate transverse relaxation time in quantitative magnetic resonance imaging in the prior art

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  • Quantitative magnetic resonance imaging parameter determination method, device and equipment and storage medium
  • Quantitative magnetic resonance imaging parameter determination method, device and equipment and storage medium

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Embodiment Construction

[0038] In the following description, specific details such as specific system structures and technologies are presented for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.

[0039] It should be understood that when used in this specification and the appended claims, the term "comprising" indicates the presence of described features, integers, steps, operations, elements and / or components, but does not exclude one or more other Presence or addition of features, wholes, steps, operations, elements, components and / or collections thereof.

[0040] In additi...

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Abstract

The invention belongs to the technical field of magnetic resonance imaging, and provides a quantitative magnetic resonance imaging parameter determination method, device and equipment and a storage medium. The method comprises the steps that a plurality of magnetic resonance images of a tested subject are acquired based on a preset MRF pulse sequence, and an evolution signal of each voxel is extracted from the plurality of magnetic resonance images; the transverse relaxation time of each voxel is determined according to an analog signal matched with the corresponding evolution signal of each voxel in a preset dictionary, wherein the MRF pulse sequence comprises a plurality of radio frequency pulse strings excited in sequence, and the radio frequency pulse strings are used for exciting thetransverse magnetization vector of the tested object; and each evolution signal is used for representing the change of the signal strength of each voxel in the plurality of magnetic resonance images.According to the quantitative magnetic resonance imaging parameter determination method provided by the embodiment of the invention, the sensitivity to the transverse relaxation time detection is increased, and the accuracy of detecting the transverse relaxation time of the tissue based on the MRF is improved.

Description

technical field [0001] The present application relates to the technical field of magnetic resonance imaging, in particular to a method, device, equipment and storage medium for determining quantitative magnetic resonance imaging parameters. Background technique [0002] Quantitative magnetic resonance imaging is tissue-specific for the detection of human pathological tissues, which can help doctors better distinguish between healthy tissues and pathological tissues, and has very important clinical diagnosis and research value. [0003] Magnetic resonance fingerprinting (Magnetic Resonance Fingerprinting, MRF) is a new type of rapid quantitative magnetic resonance imaging parameter determination technology. MRF uses a set of pseudo-randomly changing pulse sequences to scan the subject, so that different tissue types (voxels) from the subject present unique signal evolution (ie, fingerprints). Then, the obtained fingerprint is matched with multiple dictionary entries in the p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R33/54
CPCG01R33/54
Inventor 王海峰邹莉娴刘新梁栋郑海荣
Owner SHENZHEN INST OF ADVANCED TECH
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