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Method and system for controlling black blood in time-reversal steady state free precession quick imaging sequence

A technology of time reversal and imaging sequence, which is applied in medical science, sensors, diagnostic recording/measurement, etc., can solve problems such as poor image quality, and achieve the effect of improving quality and improving suppression effect

Active Publication Date: 2015-05-27
SHENZHEN INST OF ADVANCED TECH
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Problems solved by technology

[0003] Based on this, it is necessary to provide a black blood control method in time-reversal steady-state precession fast imaging sequence that can improve the image quality of imaging for the problem of poor image quality when the blood vessel flow rate is slow

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  • Method and system for controlling black blood in time-reversal steady state free precession quick imaging sequence
  • Method and system for controlling black blood in time-reversal steady state free precession quick imaging sequence
  • Method and system for controlling black blood in time-reversal steady state free precession quick imaging sequence

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Embodiment Construction

[0031] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0032] Such as figure 1 Shown is a flow chart of a method for controlling black blood in a time-reversal steady-state precession fast imaging sequence in an embodiment. The control method of black blood in the time-reversal steady-state precession fast imaging sequence, including:

[0033] Step 102, scanning and imaging through time-reversed steady-state precession fast imaging sequence.

[0034] Specifically, the echo time is the time point when the echo of the magnetic resonance signal is generated.

[0035] Step 104, applying a dephasing gradient with a preset intensity in at least one direct...

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Abstract

The invention relates to method and system for controlling black blood in a time-reversal steady state free precession quick imaging sequence. The method comprises the steps of scanning and imaging through the time-reversal steady state free precession quick imaging sequence; applying dispersed phase gradient with preset size in at least one of the layer selection direction, phase encoding layer and frequency encoding layer during scanning. According to the method and system for controlling black blood in the time-reversal steady state free precession quick imaging sequence, the dispersed phase gradient is applied in at least one of the layer selection direction, phase encoding layer and frequency encoding layer during scanning, so that the blood signal inhibition effect in an area in which blood flows slowly can be improved, and as a result, the quality of the imaged image can be improved.

Description

technical field [0001] The invention relates to the field of magnetic resonance imaging, in particular to a method and system for controlling black blood in a time-reversal steady-state precession fast imaging sequence. Background technique [0002] Time-reversed Fast Imaging with Steady-state Precession or Contrast Enhanced Fourier Acquired Steady-state (CE-FAST) is a T2-weighted (T2WI, T2-weighted imaging, transverse relaxation time-weighted imaging) gradient echo sequence. When the time-reversal steady-state precession fast imaging sequence is used for scanning imaging, when the blood vessel flow rate is slow, the blood signal suppression effect is poor, that is, the black blood effect is poor, resulting in poor image quality. Contents of the invention [0003] Based on this, it is necessary to provide a black blood control method in a time-reversal steady-state precession fast imaging sequence that can improve the imaging image quality for the problem of poor imaging ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/055
CPCA61B5/004A61B5/055
Inventor 邹超钟耀祖刘新郑海荣
Owner SHENZHEN INST OF ADVANCED TECH
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