Flow velocity coding method, magnetic resonance imaging method and magnetic resonance imaging system

A technology of magnetic resonance imaging and encoding method, which is applied in blood flow measurement, medical science, sensors, etc., can solve the problem of large flow velocity measurement error, and achieve the effect of reducing flow velocity measurement error

Active Publication Date: 2021-06-11
SHANGHAI UNITED IMAGING HEALTHCARE
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Problems solved by technology

[0004] In the embodiment of the present application, a flow velocity coding method, device, equipment, computer-readable storage medium, magnetic resonance imaging method and...

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  • Flow velocity coding method, magnetic resonance imaging method and magnetic resonance imaging system
  • Flow velocity coding method, magnetic resonance imaging method and magnetic resonance imaging system
  • Flow velocity coding method, magnetic resonance imaging method and magnetic resonance imaging system

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[0029] In order to make the purpose, technical solution and advantages of the present application clearer, the present application 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 application, and are not intended to limit the present application. Based on the examples in this application, all other examples obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0030] In this embodiment, a magnetic resonance imaging method is provided, which can dynamically adjust the flow velocity encoding of each phase during the scanning process. figure 1 is a flowchart of a magnetic resonance imaging method according to an embodiment of the present application, such as figure 1 As shown, the process includes the following steps:

[0031] In step ...

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Abstract

The invention relates to a flow velocity coding method, a magnetic resonance imaging method and a magnetic resonance imaging system. The method comprises the following steps: obtaining a first electrocardiogram signal curve of a subject from the outside of an imaging view field, and obtaining a second electrocardiogram signal curve of the subject from the inside of the imaging view field; determining a magnetohydrodynamic effect curve according to the first electrocardiogram signal curve and the second electrocardiogram signal curve; determining a blood flow estimation speed curve of the subject according to the magnetohydrodynamic effect curve; according to the blood flow estimation speed curve, determining a flow rate coding parameter of each scanning period phase; and according to the corresponding flow rate coding parameters, carrying out flow rate coding on each scanning period phase. According to the invention, the problem of large flow velocity measurement error caused by fixed flow velocity coding is solved, and the flow velocity measurement error is reduced.

Description

technical field [0001] The present application relates to the field of blood flow velocity measurement, in particular to a flow velocity encoding method, device, equipment and computer-readable storage medium, as well as a magnetic resonance imaging method and a magnetic resonance imaging system. Background technique [0002] On existing medical superconducting magnetic resonance imaging systems, blood flow velocity measurements are usually performed through phase-encoded sequences. In the flow velocity measurement using the phase encoding sequence, the flow velocity encoding refers to the velocity when the moving proton reaches the phase displacement of π, so the flow velocity encoding can only measure the flow velocity encoded to the range of -π to π. Proper selection of the flow rate code is critical to the accuracy of the flow rate measurement. The flow rate code cannot be smaller than the actual peak flow rate, otherwise phase winding will occur and the blood flow rate...

Claims

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Application Information

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IPC IPC(8): A61B5/055A61B5/026A61B5/318
CPCA61B5/055A61B5/0263
Inventor 胡均普夏翔李智赵乐乐徐健
Owner SHANGHAI UNITED IMAGING HEALTHCARE
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