Magnetic resonance vessel wall imaging method and device
An imaging method and magnetic resonance image technology, applied in magnetic resonance measurement, measurement using nuclear magnetic resonance imaging system, cardiac catheterization, etc., can solve problems such as uneven signal of cerebrospinal fluid, different degree of signal suppression, and influence on accurate resolution of blood vessel wall, etc. Achieve the effects of improving imaging quality, improving signal-to-noise ratio, and suppressing blood flow signals
Active Publication Date: 2019-03-22
SHANGHAI UNITED IMAGING HEALTHCARE
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Therefore, for CSF in different regions of the brain, DANTE suppresses the signal differently, resulting in uneven CSF signal
[0008] The inhomogeneity of the CSF signal will greatly affect the accurate resolution of the vessel wall
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[0038] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Here, the exemplary embodiments and descriptions of the present invention are used to explain the present invention, but not to limit the present invention.
[0039] Based on the problems encountered in the magnetic resonance imaging of blood vessel walls based on the combination of existing SPACE and DANTE technologies, the present invention proposes a magnetic resonance blood vessel wall imaging method on the basis of redesigning the radio frequency pulse sequence for magnetic resonance imaging , compared with the existing technology combining SPACE and DANTE, it can more effectively and uniformly suppress the cerebrospinal fluid signal, and at the same time improve the signal-to-noise ratio of the tissue. It should be no...
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A magnetic resonance vessel wall imaging method and device, the method comprising: applying a set radio frequency pulse sequence to an imaging region, wherein the set radio frequency pulse sequence sequentially includes: composite double-band delay alternation and customized excitation nutation DANTE pulse group, variable flip angle chain of three-dimensional fast spin echo SPACE and a downward flip radio frequency pulse chain (S110); collect the magnetic resonance signal generated in the imaging area, and reconstruct the imaging area according to the magnetic resonance signal A magnetic resonance image of the vessel wall (S120). By adding down-flip radio frequency pulse chain after the variable flip angle chain of three-dimensional fast spin echo SPACE, the cerebrospinal fluid signal of the whole brain can be further suppressed effectively and uniformly, and at the same time, the DANTE pulse group can help the blood vessel wall at the head-neck junction imaging.
Description
technical field [0001] The invention relates to the technical field of magnetic resonance imaging, in particular to a magnetic resonance blood vessel wall imaging method and device. Background technique [0002] Stroke has become the disease with the highest mortality and disability rate in China. Among China's 1.4 billion population, 16 million people die from stroke every year, and the mortality rate is 1.142%. The medical expenditure of stroke is huge, which brings a heavy burden to China. In 2004, the average cost of hospitalization for stroke patients in China was 6,356 yuan, twice the annual income of rural residents. At present, China spends 40 billion yuan on the treatment of stroke patients every year, which is 10 times the sum of the treatment costs of other cardiovascular diseases. In view of this, early assessment, early diagnosis, and early prevention of stroke are particularly important. [0003] Studies have shown that stroke is mainly caused by the ruptur...
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IPC IPC(8): A61B5/055A61B5/00G06T11/00
CPCA61B5/0042A61B5/055A61B5/7203G06T11/00A61B2576/026G06T2207/10088G01R33/5607G01R33/5635A61B5/7207A61B5/032G16H30/40G01R33/56509G01R33/5608G06T2210/41A61B5/02007G06T11/005G01R33/50
Inventor 刘新郑海荣张磊钟耀祖胡小情
Owner SHANGHAI UNITED IMAGING HEALTHCARE