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A magnetic resonance fingerprint imaging method, device and medium based on a fractional order model

An imaging method and magnetic resonance image technology, which is applied in the direction of using nuclear magnetic resonance imaging system for measurement, magnetic resonance measurement, and measurement equipment, can solve the problem of large errors

Active Publication Date: 2021-04-30
SHENZHEN INST OF ADVANCED TECH
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a new magnetic resonance fingerprint imaging method to solve the problem of large errors

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  • A magnetic resonance fingerprint imaging method, device and medium based on a fractional order model
  • A magnetic resonance fingerprint imaging method, device and medium based on a fractional order model
  • A magnetic resonance fingerprint imaging method, device and medium based on a fractional order model

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Embodiment Construction

[0048] Now, the technical solutions or beneficial effects in the embodiments of the present invention will be further described. Obviously, the described embodiments are only some implementations of the present invention, but not all of them.

[0049] It should be pointed out that the present invention is proposed mainly to solve the problems existing in the corresponding prior art in the field of magnetic resonance image reconstruction, so the present invention is particularly suitable for this segmented field, but it does not mean that the present invention is The scope of application of the technical solution is therefore limited, and those skilled in the art can reasonably implement it in various specific application occasions in the field of magnetic resonance imaging according to needs.

[0050] A magnetic resonance fingerprint imaging method, the steps of the imaging method comprising:

[0051] Step S1, in each excitation of the pulse sequence, using different repetitio...

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Abstract

The invention relates to magnetic resonance parameter image reconstruction, and proposes a magnetic resonance fingerprint quantitative parameter imaging method based on a fractional order Bloch model, which can improve the accuracy of quantitative parameter imaging and reduce the scanning time of quantitative parameter imaging. Its technical solution is mainly divided into: using different repetition time, echo time and flip angle in each excitation of the pulse sequence to collect data and reconstruct the image; generate a dictionary based on the fractional Bloch model; use pattern recognition to obtain multiple parameter image. The beneficial effects of implementing the present invention mainly include: improving the sampling speed and imaging accuracy of magnetic resonance fingerprint quantitative parameter imaging; while improving the quantitative parameter imaging accuracy, no additional data and scanning time are added.

Description

technical field [0001] The invention relates to the technical field of magnetic resonance imaging, in particular to a magnetic resonance fingerprint imaging method. Background technique [0002] An MRI machine uses a magnetic field and pulses of radio waves to create images of body tissues and structures. Compared with traditional magnetic resonance imaging, magnetic resonance fingerprinting (Magnetic Resonance Fingerprinting, MRF) can obtain more information per measurement. As a new method to quickly and simultaneously obtain multi-parameter quantitative imaging, magnetic resonance fingerprint imaging mainly includes the following steps: 1. Different repetition time (TimeofRepetition, TR) and echo time ( Time of Echo, TE) and flip angle (Flip Angle, FA), and use multiple excitation spiral trajectory (multi-interleaf spiral) to collect data and reconstruct the undersampled image sequence; 2. According to the parameters of the pulse sequence (TR, TE and FA), based on the c...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R33/54A61B5/055G06F17/14G06F17/16
CPCA61B5/055G01R33/54G01R33/543G06F17/142G06F17/16G06F17/14
Inventor 王海峰梁栋邹莉娴刘新郑海荣
Owner SHENZHEN INST OF ADVANCED TECH
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