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T1 parameter diagram imaging method and magnetic resonance imaging system

A technology of magnetic resonance imaging and imaging method, applied in the medical field, can solve problems such as small space coverage, and achieve the effects of expanding space coverage, saving scanning time, and improving scanning efficiency

Active Publication Date: 2018-11-06
SHANGHAI UNITED IMAGING HEALTHCARE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In view of this, the embodiment of this solution provides a T1 parameter map imaging method and a magnetic resonance imaging system to solve the problem in the prior art that the spatial coverage of T1 parameter map imaging within a single breath-hold is small

Method used

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  • T1 parameter diagram imaging method and magnetic resonance imaging system
  • T1 parameter diagram imaging method and magnetic resonance imaging system

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Embodiment 1

[0057] The embodiment of the present invention provides a T1 parameter map imaging method. The T1 parameter map imaging method can be used to obtain a whole-heart T1 parameter map of the heart.

[0058] figure 1 This is an example flow chart of a T1 parameter map imaging method provided by an embodiment of the present invention. Such as figure 1 As shown, in this embodiment, the T1 parameter map imaging method may include the following steps:

[0059] S101, using SMS (Simultaneously Multi Slice, simultaneous multi-layer simultaneous excitation) method to simultaneously collect non-selective saturation of M different slices of the heart in one or more specified phases of the first type heartbeat cycle in a single breath-hold Proton density weighted imaging data prepared by pulse magnetization.

[0060] Optionally, the period of a single breath-hold may correspond to one or more first-type heartbeat cycles, and each first-type heartbeat period corresponds to a different period of a si...

Embodiment 2

[0101] An embodiment of the present invention provides a T1 parameter map imaging system. The system includes a processor and a memory. The memory is used to store instructions. When the instructions are executed by the processor, the system realizes any T1 parameter in the first embodiment. Figure imaging method.

Embodiment 3

[0103] The embodiment of the present invention provides a magnetic resonance imaging system.

[0104] Figure 5 It is a block diagram of a magnetic resonance imaging (MRI) system according to some embodiments of the present application. As explained, the MRI system 100 may include an MRI scanner 110, a controller 120, a processor 130, and a display 140. The MRI scanner 110 may include a magnet module 111 and a radio frequency (RF) module 112. In some embodiments, the MRI scanner 110 may perform scanning on a subject. In some embodiments, the scan may be an imaging scan used to generate magnetic resonance (MR) images, or a pre-scan used to calibrate the MRI system 100. The magnet module 111 may include a main magnetic field generator and / or a gradient magnetic field generator ( Figure 5 Not shown in). The main magnetic field generator can generate a static magnetic field B0 during scanning. The main magnetic field generator can be of various types, including, for example, per...

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Abstract

The embodiment of the invention provides a T1 parameter image imaging method and a magnetic resonance imaging system. The method comprises the following steps: during the specified period of one or more first-type heart beat cycles with a single breath hold, proton density weighted imaging data of heart different M layers prepared by non-selective saturated pulse magnetization are collected simultaneously by using SMS method, during the specified period of one or more second-type heart beat cycles with a single breath hold, T1-weighted imaging data of heart different M layers prepared by non-selective saturated pulse magnetization are collected simultaneously by using SMS method, according to the proton density weighted imaging data and T1-weighted imaging data, the T1 parameters of the heart are obtained, by using SMS technology, two or more images in the same period can be acquired simultaneously in one heartbeat cycle, which enlarges the space coverage of T1 parameter map in singlebreath hold, and achieves the whole heart T1 parameter map, thus solving the problem of small space coverage of T1 parameter map in single breath hold.

Description

【Technical Field】 [0001] This solution relates to the field of medical technology, in particular to a T1 parameter map imaging method and a magnetic resonance imaging system. 【Background technique】 [0002] Magnetic Resonance Imaging (MRI) is an imaging technique that uses atomic nuclei to resonate in a magnetic field to generate a signal and reconstruct the image of the signal. , The nuclei in human tissues are usually positively charged, and the nuclei of these elements such as 1H and 31P can perform spin motion. Under normal circumstances, the arrangement of the nuclear spin axis is irregular. When in an external enhanced magnetic field, the spatial orientation of the nuclear spin transitions from disorder to order. As a result, the spin nucleus also precesses around the external magnetic field vector at the angle between the spin axis and the vector direction of the external magnetic field. This precession is called Larmor precession. The magnetization vector of the spin sy...

Claims

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Application Information

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IPC IPC(8): A61B5/055
CPCA61B5/0037A61B5/0044A61B5/055A61B5/72
Inventor 徐健叶猛
Owner SHANGHAI UNITED IMAGING HEALTHCARE
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