Scanning protocol parameter determination method and magnetic resonance system

A scanning protocol and parameter determination technology, which is applied in the direction of magnetic resonance measurement, magnetic variable measurement, and measurement devices, can solve the problem of time-consuming and labor-intensive modification of scanning protocol parameters, and achieve the effect of reducing the time spent on magnetic resonance imaging and reducing the time spent

Pending Publication Date: 2021-12-07
SHANGHAI UNITED IMAGING HEALTHCARE
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The embodiment of the present invention provides a scanning protocol parameter determination method and a magnetic resonance system, which solves the time-consuming and labor-intensive problem of scanning protocol parameter modification in the magnetic resonance scanning method in the prior art

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  • Scanning protocol parameter determination method and magnetic resonance system
  • Scanning protocol parameter determination method and magnetic resonance system
  • Scanning protocol parameter determination method and magnetic resonance system

Examples

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Embodiment 1

[0027] figure 1 It is a flow chart of the magnetic resonance scanning method provided by Embodiment 1 of the present invention. The technical solution of this embodiment is applicable to the situation of quickly and automatically completing the modification of scanning protocol parameters. The method can be executed by the controller provided in the embodiment of the present invention. The method specifically includes the following steps:

[0028] S101. Set scan protocol parameters, the scan protocol parameters are used to excite one or more slices of the target object, and the scan protocol parameters include slice selection gradients, phase encoding gradients, and frequency encoding gradients.

[0029] Before performing a magnetic resonance scan on the target object, it is necessary to set corresponding scan protocol parameters on the parameter setting interface. The scan protocol parameters include slice selection gradients (parameters), phase encoding gradients (paramet...

Embodiment 2

[0059] On the basis of the method for determining the parameters of the above-mentioned scanning protocol, this application also proposes a magnetic resonance imaging method, which divides the scanning protocol into a plurality of visual sequence sub-modules: sequence routine sub-modules, sequence basic constituent modules, and these modules are visualized as modules The way exists in the toolbox. Among them, the conventional sub-modules of the sequence include, for example, the fat pressing module, the space saturation zone module, the inversion recovery module, etc.; the basic building blocks of the sequence include, for example, RF excitation pulse, refocusing pulse, slice selection gradient, phase encoding gradient, frequency encoding gradient, etc. These basic building blocks can be configured flexibly to meet the design requirements of the target sequence. Wherein, the parameter settings of the slice selection gradient, the phase encoding gradient, and the frequency enco...

Embodiment 3

[0063] An embodiment of the present invention provides a magnetic resonance system, such as Figure 5 and Image 6 As shown, the system includes a scanning device 110. The scanning device 110 includes a radio frequency transmitting coil 111, a gradient coil 112, a radio frequency receiving coil 113 and a controller 120. The radio frequency transmitting coil 111 is used to transmit radio frequency pulses to the scanning site of the target object to Excite the nuclear spin of the scanning part; the gradient coil 112 is used to apply the layer selection gradient field, the phase encoding gradient field and the frequency encoding gradient field to the scanning part to generate echo signals; the radio frequency receiving coil 113 is used to receive the echo signals to form Magnetic resonance scan data; the controller 120 is used to receive set scan protocol parameters, the scan protocol parameters are used to excite one or more slices of the target object, and the scan protocol par...

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Abstract

The embodiment of the invention discloses a scanning protocol parameter determination method and a magnetic resonance system, and the method comprises the steps: setting scanning protocol parameters which are used for exciting one or more slice layers of a target object, and comprise a layer selection gradient, a phase coding gradient and a frequency coding gradient; when it is detected that the scanning protocol parameters enable a target object to have a to-be-scanned slice layer with PNS ultralimit in the magnetic resonance data acquisition process, updating the scanning protocol parameters, the updating method of the scanning protocol parameters comprising the following steps: determining an application direction of one or more of a layer selection gradient, a phase coding gradient and a frequency coding gradient based on a golden proportion algorithm; and performing magnetic resonance imaging on the target object according to the updated scanning protocol parameters. The problem that time and labor are wasted when scanning protocol parameters are modified in a magnetic resonance scanning method in the prior art is solved.

Description

technical field [0001] Embodiments of the present invention relate to the field of medical equipment control, in particular to a scanning protocol parameter determination method and a magnetic resonance system. Background technique [0002] Under normal circumstances, MRI is safe for the subjects. However, due to the increasing magnetic field strength and the continuous emergence of new technologies, the biological effects and safety issues of MRI cannot be ignored, especially when it comes to system hardware (such as high Magnetic field 5T, 7T, etc.). [0003] A higher gradient strength and switching rate will cause a large change in the magnetic flux density in the scanning cavity in a short period of time, and the induced electric field will excite the peripheral nerves and generate peripheral nerve stimulation (PNS for short). If the electric field reaches a certain level, it will make people feel uncomfortable or have obvious pain, and may even be life-threatening, so ...

Claims

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Application Information

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IPC IPC(8): G01R33/34G01R33/385
CPCG01R33/34G01R33/34053G01R33/34061G01R33/34069G01R33/34076G01R33/385Y02A90/30
Inventor 刘双双贾二维周晓东
Owner SHANGHAI UNITED IMAGING HEALTHCARE
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