Non-contract enhanced magnetic resonance venography imaging method
A technology of contrast imaging and magnetic resonance, applied in medical science, sensors, diagnostic recording/measurement, etc., can solve the problems of poor suppression effect, inability to highlight the characteristics of veins and blood vessels, and difficulty in completely suppressing blood signals, etc., to achieve Distinctive, easy-to-achieve effects
Active Publication Date: 2015-04-29
SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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The motion-sensitive-induced-equilibrium (MSDE) method is more sensitive to the flow velocity of blood. When the blood flow velocity is slow, it is difficult to completely suppress the signal of blood, which makes this method unable to suppress the signal of venous blood flow well; while adding a saturation band The method requires a very high balance between blood flow velocity and layer thickness, which makes it difficult to obtain high-quality multi-layer black blood images in 3D imaging; Good, the image obtained after subtraction cannot highlight the characteristics of veins very well
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[0025] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the present invention will be further described in detail below in conjunction with the embodiments and 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.
[0026] Please refer to figure 1 As shown, the present invention specifically provides a non-contrast-enhanced magnetic resonance venography imaging method, the imaging method comprising: S101 by combining nutation interaction delayed specific excitation (DANTE) module and equilibrium steady-state free-spinning (bSSFP) sequence , to collect images, and obtain images in which both arterial and venous vessels are inhibited; S102 collects images by combining the Motion Sensitive Equilibrium (MSDE) module and the Balance Steady-State Free Precession (bSSFP) sequence, and ...
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The invention provides a non-contract enhanced magnetic resonance venography imaging method. The non-contract enhanced magnetic resonance venography imaging method includes combining balanced steady-state free precession with specific models with delay alternating with nutation for tailored excitation, and acquiring images to obtain images with suppressed artery blood vessels and suppressed vein blood vessels; combining motion-sensitized driven equilibrium models with the balanced steady-state free precession, and acquiring images to obtain images with suppressed artery blood vessels; subtracting the images with the suppressed artery blood vessels from the images with the suppressed artery blood vessels and the suppressed vein blood vessels to obtain images of vein blood vessels. The non-contract enhanced magnetic resonance venography imaging method has the advantage that the images with suppressed blood vessel surrounding tissues, suppressed artery blood vessels and highlighted vein blood vessels can be obtained by the aid of the non-contract enhanced magnetic resonance venography imaging method.
Description
technical field [0001] The invention relates to the field of magnetic resonance imaging, in particular to a non-contrast enhanced magnetic resonance venography imaging method. Background technique [0002] Magnetic resonance angiography can be divided into two categories. According to whether a contrast agent is used in the imaging process, it can be divided into contrast-enhanced magnetic resonance angiography and non-contrast-enhanced magnetic resonance angiography. Contrast-enhanced magnetic resonance angiography, through the use of contrast agents (such as gadolinium), has the advantages of more realistic display of vascular stenosis, more reliable display of vascular lumen, and multiple arterial and venous sites can be displayed through a single injection. However, , studies in recent years have shown that gadolinium contrast agents used in contrast-enhanced magnetic resonance angiography may cause serious adverse reactions, such as nephrogenic systemic fibrosis, and th...
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IPC IPC(8): A61B5/055
CPCA61B5/055A61B5/721
Inventor 苏适谢国喜张晓咏史彩云李德彪樊昭阳郑海荣刘新
Owner SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI