Method and device for controlling execution of impulse sequence

A technology of pulse sequence and control pulse, which is applied in the directions of using nuclear magnetic resonance imaging system for measurement, magnetic resonance measurement, and magnetic variable measurement, etc., which can solve the problems such as the reusability and flexibility of sequence modules that cannot take into account the efficiency of pulse sequence execution. , to achieve the effect of easy search, easy expansion, and improved execution efficiency

Active Publication Date: 2014-12-17
SHANGHAI UNITED IMAGING HEALTHCARE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The problem solved by the present invention is that the execution efficiency of the pulse sequence and the reusability and flexibility of the sequence module cannot be taken into account in the prior art

Method used

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  • Method and device for controlling execution of impulse sequence
  • Method and device for controlling execution of impulse sequence
  • Method and device for controlling execution of impulse sequence

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] see Figure 4 , the method for controlling the execution of the pulse sequence described in this embodiment, the pulse sequence includes several sequence modules, the sequence module includes at least one sequence unit, and the method includes:

[0051] Step 1: receiving an instruction from the user to execute the pulse sequence;

[0052] Step 2: According to the instruction of the pulse sequence, according to the arrangement order of the sequence modules, call the information of the pre-established intermediary as needed, and control the execution of the sequence module in turn; the intermediary includes the information provided by each sequence module own information.

[0053] The pulse sequence may include several sequence modules, each sequence module includes at least one sequence unit, the sequence unit may be at least one gradient pulse, or at least one radio frequency pulse, and the sequence module may be at least one gradient pulse and A combination of at lea...

Embodiment 2

[0058] This embodiment provides a pulse sequence in the field of magnetic resonance imaging, such as Figure 5 As shown, the pulse sequence includes a gradient echo sequence module (Gradient Echo kernel, GRE kernel), that is, node 109, and the gradient echo sequence module is used to generate magnetic resonance signals, and then excite the magnetic resonance equipment to obtain the Magnetic resonance image. The pulse sequence also includes other common sequence modules, such as an inversion recovery module (IR), that is, node 107, a free time filling module (FilltimeLeaf), that is, node 108, and nodes 101, 102, 103, 104, Node 105 and node 106 together form the pulse sequence 10 .

[0059] Each sequence module of the pulse sequence 10 can be organized according to a certain level and subordination relationship, so as to facilitate the execution of the pulse sequence. For example, each sequence module can use a tree structure to organize each sequence module, or use a binary h...

Embodiment 3

[0067] see Figure 6 , this embodiment also provides a device for controlling the execution of the pulse sequence, the pulse sequence includes several sequence modules, the sequence module includes at least one sequence unit, and the device includes:

[0068] an instruction receiving unit 110, configured to receive an instruction for executing the pulse sequence;

[0069] Intermediary 20, including its own information provided by each sequence module;

[0070] The execution control unit 120 calls the information in the intermediary 20 as needed according to the sequence of the sequence modules according to the instruction to execute the pulse sequence, and controls the execution of the sequence modules sequentially.

[0071] Each sequence module in the pulse sequence is arranged according to a certain level and affiliation, and the execution control unit 120 sequentially executes the pulse sequence according to the above arrangement order. Since there is often a dependency r...

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Abstract

The invention provides a method and a device for controlling execution of an impulse sequence. The impulse sequence comprises a plurality of sequence modules, wherein each sequence module comprises at least one sequence unit. The method comprises the following steps of receiving an impulse sequence execution command of a user; calling information of a pre-built agency as needed according to the impulse sequence execution command and the arrangement sequence of sequence modules; and sequentially controlling execution of the sequence modules. The agency comprises a gather of self information provided by the various sequence modules. By the method in an embodiment, when the sequence modules are executed, information of all the other sequence modules in the agency can be called as needed, the rest nodes are not required to be traversed or required nodes can be used in a self object, the reusability and the flexibility of the sequence modules are maintained, and the executing efficiency of the impulse sequence is improved.

Description

technical field [0001] The invention relates to the field of execution of pulse sequences, in particular to a method and device for controlling the execution of pulse sequences. Background technique [0002] A pulse sequence refers to a sequence composed of sequence units such as radio frequency pulses and / or gradient pulses with a certain width and amplitude. In the prior art, several radio frequency pulses and / or gradient pulses are usually combined into multiple sequence modules that can be reused, the sequence modules include at least one sequence unit, and the sequence modules are arranged in a specific order and hierarchical structure form a pulse train. [0003] There is a dependency relationship between each sequence module of the pulse sequence. The dependency relationship refers to the relationship of interaction and mutual influence between various sequence modules in order to execute the pulse sequence. For example, executing a certain sequence module in the p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R33/54
Inventor 王振奎王丽丽
Owner SHANGHAI UNITED IMAGING HEALTHCARE
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