Magnetic resonance parameter imaging method and device, and medical equipment and storage medium

An imaging method and magnetic resonance technology, which are applied in the direction of using nuclear magnetic resonance imaging system for measurement, magnetic resonance measurement, measurement device, etc., can solve the problems of long scanning time and low imaging accuracy, and achieve the effect of improving efficiency and accuracy

Active Publication Date: 2019-08-23
NAT INST OF ADVANCED MEDICAL DEVICES SHENZHEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a magnetic resonance parameter imaging method, device, medical equipment and storage medium, aiming to solve the problems of long scanning time and low imaging accuracy due to the magnetic resonance parameter imaging method in the prior art

Method used

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  • Magnetic resonance parameter imaging method and device, and medical equipment and storage medium
  • Magnetic resonance parameter imaging method and device, and medical equipment and storage medium
  • Magnetic resonance parameter imaging method and device, and medical equipment and storage medium

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Embodiment 1

[0027] figure 1 The implementation process of the magnetic resonance parameter imaging method provided by Embodiment 1 of the present invention is shown. For the convenience of description, only the parts related to the embodiment of the present invention are shown, and the details are as follows:

[0028] In step S101 , accelerated sampling is performed on an image to be reconstructed of a preset observation target in a preset parameter direction, and K-space data corresponding to the image to be reconstructed is obtained.

[0029] In the embodiment of the present invention, the observation target can be the tissue and organ of the patient, and the parameter direction can be echo time (echotime, TE) and spin-lock time (spin-lock time, TSL), when the parameter direction is TE, The parameter values ​​and parameter maps obtained by subsequent fitting are T 2 value and T 2 Figure, when the parameter direction is TSL, the parameter value and parameter map obtained by subsequent ...

Embodiment 2

[0063] figure 2 The structure of the magnetic resonance parameter imaging device provided by the second embodiment of the present invention is shown. For the convenience of description, only the parts related to the embodiment of the present invention are shown, including:

[0064] The accelerated sampling unit 21 is configured to perform accelerated sampling on an image to be reconstructed of a preset observation target in a preset parameter direction, and obtain K-space data corresponding to the image to be reconstructed.

[0065] In the embodiment of the present invention, the parameter direction can be the echo time TE and the spin-lock time TSL. When the parameter direction is TE, the parameter value and parameter map obtained by the subsequent fitting are respectively T 2 value and T 2 Figure, when the parameter direction is TSL, the parameter value and parameter map obtained by subsequent fitting are T 1ρ value and T 1ρ picture.

[0066] In the embodiment of the pr...

Embodiment 3

[0095] Figure 4 The structure of the medical device provided by the third embodiment of the present invention is shown, and for the convenience of description, only the parts related to the embodiment of the present invention are shown.

[0096] The medical device 4 of the embodiment of the present invention includes a processor 40 , a memory 41 and a computer program 42 stored in the memory 41 and operable on the processor 40 . When the processor 40 executes the computer program 42, the steps in the above-mentioned method embodiments are realized, for example figure 1 Steps S101 to S110 are shown. Alternatively, when the processor 40 executes the computer program 42, the functions of the units in the above-mentioned device embodiments are realized, for example figure 2 Function of units 21 to 25 shown.

[0097] In the embodiment of the present invention, the scanning speed and imaging speed of magnetic resonance parameter imaging are accelerated through variable density ...

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Abstract

The invention is suitable for the technical field of magnetic resonance imaging, and provides a magnetic resonance parameter imaging method and device, and medical equipment and a storage medium. Themethod includes the following steps: performing accelerated sampling on a to-be-reconstructed image of an observation target under a preset parameter direction, and obtaining K space data corresponding to the to-be-reconstructed image; calculating the parameter value and compensation factor of the to-be-reconstructed image according to the K space data and a parameter relaxation model; generatinga compensation image corresponding to the to-be-reconstructed image according to the compensation factor, and respectively calculating a low rank part and a sparse part of the to-be-reconstructed image according to the compensation image so as to perform update on the compensation image for multiple times; and updating the to-be-reconstructed image according to the updated compensation image, fitting a parametric diagram of the observation target to output when the update of the to-be-reconstructed image converges, otherwise calculating the updated parameter value and compensation factor of the to-be-reconstructed image according to the parameter relaxation model, and jumping to the step that generates the compensation image. Therefore, the efficiency and precision of magnetic resonance parameter imaging can be effectively enhanced.

Description

technical field [0001] The invention belongs to the technical field of magnetic resonance imaging, and in particular relates to a magnetic resonance parameter imaging method, device, medical equipment and storage medium. Background technique [0002] Magnetic resonance parametric imaging is based on some parameters inherent in different tissues in the human body, such as longitudinal relaxation time T 1 , the transverse relaxation time T 2 , proton density, longitudinal relaxation time T in the rotating coordinate system 1ρ Quantitative analysis to distinguish different tissues can provide doctors with more accurate diagnostic information, so magnetic resonance parametric imaging has been widely used in clinical practice. However, when performing magnetic resonance parametric imaging, it is necessary to acquire images of multiple different parameter direction values ​​in the parameter direction (such as TE (echo time, echo time), TSL (spin lock time, spin-lock time)), scan...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): G01R33/56G01R33/561A61B5/055
CPCG01R33/5608G01R33/561A61B5/055G06T11/005G06T11/006
Inventor朱燕杰刘元元梁栋刘新郑海荣
OwnerNAT INST OF ADVANCED MEDICAL DEVICES SHENZHEN