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Rapid magnetic resonance multi-parameter imaging method and device

An imaging method and magnetic resonance technology, applied in magnetic resonance measurement, measurement using nuclear magnetic resonance image system, measurement device, etc., can solve problems such as simple dictionary model, poor result accuracy, complex signal evolution, etc., to improve accuracy Effect

Active Publication Date: 2020-08-14
SHENZHEN INST OF ADVANCED TECH
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, the evolution of the signal in the traditional MRF process of magnetic resonance fingerprint imaging is relatively complicated, and its dictionary model is too simple, resulting in poor accuracy of the obtained results

Method used

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  • Rapid magnetic resonance multi-parameter imaging method and device
  • Rapid magnetic resonance multi-parameter imaging method and device

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Embodiment Construction

[0070] 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.

[0071] 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.

[0072] It should...

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Abstract

The application is suitable for the technical field of magnetic resonance, and provides a rapid magnetic resonance multi-parameter imaging method and device. The method comprises the steps: collectingN groups of data through a pulse sequence, and carrying out the reconstruction based on the N groups of data to obtain N images, setting the N to be an integer greater than or equal to 1; generatinga dictionary from the parameters of the pulse sequence, a spin-lattice relaxation time constant T1 and a spin-spin relaxation time constant T2 through a fractional order Bloch model; and matching thesignal sequences of the corresponding pixels on the N images with the entries in the dictionary, and determining final R tissue characteristic parameter graphs as the output of fingerprint imaging according to the matching degree. According to the application, the accuracy of magnetic resonance fingerprint quantitative imaging can be improved.

Description

technical field [0001] The present application belongs to the technical field of magnetic resonance, and in particular relates to a fast magnetic resonance multi-parameter imaging method and device. Background technique [0002] Magnetic resonance imaging (MRI) is a powerful medical imaging modality that has no ionizing radiation and can provide a variety of image contrasts to obtain information on human anatomy, physiological functions, blood flow, and metabolism. Among them, magnetic resonance fingerprinting (MRF) is a fast quantitative magnetic resonance imaging new technology, which can simultaneously obtain multiple tissue characteristic parameters of the tissue in one scan. The magnetic resonance fingerprint imaging technology mainly includes using N times to excite pulse sequences with different repetition times (TR), echo times (TE) and flip angles (FA), collecting N sets of data and reconstructing N highly undersampled images. Then use the first-order Bloch model t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R33/50G01R33/48G01R33/56
CPCG01R33/50G01R33/4818G01R33/5602
Inventor 王海峰邹莉娴梁栋刘新郑海荣
Owner SHENZHEN INST OF ADVANCED TECH
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