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Magnetic resonance scanning strategy determination method and magnetic resonance scanning system

A magnetic resonance scanning and strategy determination technology, applied in the field of medical imaging, can solve problems such as large amount of calculation, time-consuming, complex operation, etc.

Active Publication Date: 2018-02-02
SHANGHAI UNITED IMAGING HEALTHCARE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The method adopted in the prior art has a large amount of calculation, complex operation and long time-consuming

Method used

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  • Magnetic resonance scanning strategy determination method and magnetic resonance scanning system
  • Magnetic resonance scanning strategy determination method and magnetic resonance scanning system
  • Magnetic resonance scanning strategy determination method and magnetic resonance scanning system

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0043] Figure 1a The flow chart of the method for determining the MRI scanning strategy provided by Embodiment 1 of the present invention, this embodiment is applicable to the situation where the MRI system is used to obtain the scan image of the patient, the method can be executed by the MRI scanning system, and the system can adopt implemented in software and / or hardware. Such as Figure 1a As shown, the method specifically includes:

[0044] S110. Obtain the gradient strength of the logical axis of the gradient pulse sequence under the set time window, and determine the average power of the gradient of the logical axis according to the gradient strength. Optionally, the set time window may include one or more repetition times (repetitiontime, TR)

[0045] Wherein, the gradient pulse sequence is issued by the sequence generator in the magnetic resonance system spectrometer system. Exemplarily, the gradient pulse sequence can be a series of logic driving signal waveforms, a...

Embodiment 2

[0074] figure 2 The flow chart of the method for determining the MRI scan strategy provided by Embodiment 2 of the present invention. On the basis of the above embodiments, this embodiment further provides a method for determining the first gradient in the physical coordinate system according to the average power of the gradient on the logical axis and preset rules. Method for averaging power matrices. Correspondingly, such as figure 2 As shown, the method specifically includes:

[0075] S210. Obtain the gradient strength of the logical axis of the gradient pulse sequence under the set time window, and determine the average power of the gradient of the logical axis according to the gradient strength.

[0076] S220. Determine the second gradient average power matrix in the logical coordinate system according to the preset arrangement mode of the gradient average power of each logical axis.

[0077] The coaxial average gradient power and the cross-axis average gradient powe...

Embodiment 3

[0090] Figure 3a Shown is the flow chart of the method for determining the magnetic resonance scanning strategy provided by Embodiment 3 of the present invention. On the basis of the above-mentioned embodiments, a method for determining the magnetic resonance scanning strategy according to the maximum gradient average power and the direction of the maximum gradient average power is further provided. method. Correspondingly, as shown in Figure 3, the method specifically includes the following steps:

[0091] S310. Obtain the gradient intensity of the logical axis of the gradient pulse sequence under the set time window, and determine the average power of the gradient of the logical axis according to the gradient intensity.

[0092] S320. Determine the second gradient average power matrix in the logical coordinate system according to the preset arrangement mode of the gradient average power of each logical axis.

[0093] S330. Perform matrix similar transformation on the seco...

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Abstract

The embodiment of the invention provides a magnetic resonance scanning strategy determination method and a magnetic resonance scanning system. The magnetic resonance scanning strategy determination method comprises the steps of acquiring the gradient strength of a logic axis of a gradient pulse sequence in a set time window, and determining the gradient average power of the logic axis according tothe gradient strength; determining a first gradient average power matrix in a physical coordinate system according to the gradient average power of the logic axis and preset rules; determining the maximum gradient average power and a direction of the maximum gradient average power according to the first gradient average power matrix; and determining a magnetic resonance scanning strategy according to the maximum gradient average power and the direction of the maximum gradient average power. The embodiment of the invention solves problems that the calculation for the maximum average power is great in calculation amount, the operation is complex, and the time spent on determining the magnetic resonance scanning strategy is long, a scanning strategy can be quickly determined according to thecalculation result, and clinical scanning is ensured to be performed smoothly.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of medical imaging, and in particular to a method for determining a magnetic resonance scanning strategy and a magnetic resonance scanning system. Background technique [0002] Medical imaging refers to the technology and processing process of obtaining internal tissue images of the human body or a certain part of the human body in a non-invasive manner for medical treatment or medical research. Among them, magnetic resonance imaging (Magnetic Resonance Imaging, MRI) technology is one of the main imaging technologies applied to medical examination. [0003] One of the most important hardware in the gradient system magnetic resonance equipment, including gradient coils, gradient amplifiers, digital-to-analog converters and other structures, the gradient coils provide three Orthogonal gradient magnetic fields (corresponding to the spatial coordinates X, Y, and Z axes, called physical axe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R33/20A61B5/055
CPCA61B5/055G01R33/20
Inventor 刘柳张树恒刘铭湖
Owner SHANGHAI UNITED IMAGING HEALTHCARE
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